Ask Difference

Bag vs. Case — What's the Difference?

By Fiza Rafique & Maham Liaqat — Updated on April 4, 2024
A bag is flexible and often used for carrying, while a case is rigid and provides protection.
Bag vs. Case — What's the Difference?

Difference Between Bag and Case

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Key Differences

Bags are typically made from softer materials like cloth or leather, making them more flexible and suited for carrying a variety of items from groceries to personal belongings. On the other hand, cases are usually constructed from harder materials like plastic or metal, offering more protection for the contents inside, such as electronics or musical instruments.
Bags often come with minimal internal structure, allowing for more versatility in what they can carry, whereas cases frequently have specific compartments or padding to securely hold and protect specific items.
While bags may be closed with a zipper, snaps, or nothing at all, allowing for easy access and the ability to carry oversized items, cases often feature secure locks, clasps, or tightly fitting lids that provide a higher level of security and protection from the elements.
The portability of a bag is usually facilitated by handles or shoulder straps, making it easier to carry for longer periods. Cases, on the other hand, might come with a handle or sometimes wheels and a telescoping handle, catering to heavier items that are difficult to carry.
Bags are generally considered more casual and suitable for everyday use, while cases are often used for specific purposes, such as carrying tools, instruments, or equipment, highlighting their functional differences.
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Comparison Chart

Material

Soft materials like cloth, leather
Hard materials like plastic, metal

Structure

Minimal internal structure, flexible
Specific compartments, rigid

Closure

Zippers, snaps, or open
Secure locks, clasps, tightly fitting lids

Portability

Handles, shoulder straps
Handle, sometimes wheels and telescoping handle

Usage

Casual, everyday items
Specific items (tools, instruments), protection

Compare with Definitions

Bag

A soft container used to carry items.
She packed her lunch in a small canvas bag.

Case

A cover or enclosure for a device.
He bought a waterproof case for his smartphone.

Bag

An accessory for personal items.
Her leather bag matched her shoes perfectly.

Case

A rigid container designed to hold and protect its contents.
She placed her violin back in its case after the concert.

Bag

A piece of luggage.
He prefers to travel with a single bag to avoid checking luggage.

Case

An instance or occurrence of a particular type or category.
A particularly interesting case of this phenomenon is...

Bag

A term used in various sports.
The golfer carried his clubs in a heavy golf bag.

Case

A situation requiring investigation.
The detective looked into the case of the missing heirloom.

Bag

A metaphorical term indicating a particular interest.
Quantum physics is really his bag.

Case

A legal action or suit.
The lawyer argued the case before the judge.

Bag

A bag (also known regionally as a sack) is a common tool in the form of a non-rigid container. The use of bags predates recorded history, with the earliest bags being no more than lengths of animal skin, cotton, or woven plant fibers, folded up at the edges and secured in that shape with strings of the same material.Despite their simplicity, bags have been fundamental for the development of human civilization, as they allow people to easily collect loose materials such as berries or food grains, and to transport more items than could readily be carried in the hands.

Case

An instance of a particular situation; an example of something occurring
A case of mistaken identity
In many cases farmers do have a deep feeling for their land

Bag

A container of flexible material, such as paper, plastic, or leather, that is used for carrying or storing items.

Case

An instance of a disease, injury, or problem
200,000 cases of hepatitis B

Bag

A handbag; a purse.

Case

A legal action, especially one to be decided in a court of law
A libel case
A former employee brought the case against the council

Bag

A piece of hand luggage, such as a suitcase or satchel.

Case

Any of the forms of a noun, adjective, or pronoun that express the semantic relation of the word to other words in the sentence
The accusative case

Bag

A pouchlike or sagging organ or part of the body, such as a cow's udder.

Case

A container designed to hold or protect something
A silver cigarette case

Bag

An object that resembles a pouch.

Case

Each of the two forms, capital or minuscule, in which a letter of the alphabet may be written or printed.

Bag

(Nautical) The sagging or bulging part of a sail.

Case

Surround in a material or substance
The towers are of steel cased in granite

Bag

The amount that a bag can hold.

Case

Reconnoitre (a place) before carrying out a robbery
I was casing the joint

Bag

An amount of game taken or legally permitted to be taken.

Case

An instance or occurrence of a particular kind or category
A case of mistaken identity.

Bag

(Baseball) A base.

Case

An occurrence of a disease or disorder
A mild case of flu.

Bag

(Slang) An area of interest or skill
Cooking is not my bag.

Case

A set of circumstances or a state of affairs; a situation
It may rain, in which case the hike will be canceled.

Bag

(Slang) A woman considered ugly or unkempt.

Case

Actual fact; reality
We suspected the walls were hollow, and this proved to be the case.

Bag

To put into a bag
Bag groceries.

Case

A question or problem; a matter
It is simply a case of honor.

Bag

To cause to bulge like a pouch.

Case

A situation that requires investigation, especially by a formal or official body.

Bag

To capture or kill as game
Bagged six grouse.

Case

An action or a suit or just grounds for an action.

Bag

To gain; acquire
He bagged a profit from the sale.

Case

The facts or evidence offered in support of a claim.

Bag

To capture or arrest
Was bagged for trespassing.

Case

A set of reasons or supporting facts; an argument
Presented a good case for changing the law.

Bag

To accomplish or achieve
Bagged a birdie with a long putt.

Case

A person being assisted, treated, or studied, as by a physician, lawyer, or social worker.

Bag

To fail to attend purposely; skip
Bagged classes for the day and went to the beach.

Case

(Informal) A peculiar or eccentric person; a character.

Bag

To stop doing or considering; abandon
Bagged the idea and started from scratch.

Case

In traditional grammar, a distinct form of a noun, pronoun, or modifier that is used to express one or more particular syntactic relationships to other words in a sentence.

Bag

To terminate the employment of.

Case

Case In some varieties of generative grammar, the thematic or semantic role of a noun phrase as represented abstractly but not necessarily indicated overtly in surface structure. In such frameworks, nouns in English have Case even in the absence of inflectional case endings.

Bag

To pack items in a bag.

Case

A container; a receptacle
A jewelry case.
Meat-filled cases of dough.

Bag

To hang loosely
The pants bag at the knees.

Case

A container with its contents.

Bag

To swell out; bulge.

Case

A decorative or protective covering or cover.

Bag

A soft container made out of cloth, paper, thin plastic, etc. and open at the top, used to hold food, commodities, and other goods.

Case

A set or pair
A case of pistols.

Bag

A container made of leather, plastic, or other material, usually with a handle or handles, in which you carry personal items, or clothes or other things that you need for travelling. Includes shopping bags, schoolbags, suitcases, and handbags.

Case

The frame or framework of a window, door, or stairway.

Bag

(colloquial) One's preference.
Acid House is not my bag: I prefer the more traditional styles of music.

Case

The surface or outer layer of a metal alloy.

Bag

(derogatory) An ugly woman.

Case

A shallow compartmented tray for storing type or type matrices.

Bag

A fellow gay man.

Case

The form of a written, printed, or keyed letter that distinguishes it as being lowercase or uppercase
Typed the password using the wrong case.

Bag

(baseball) The cloth-covered pillow used for first, second, and third base.
The grounder hit the bag and bounced over the fielder’s head.

Case

To put into or cover with a case; encase.

Bag

(baseball) First, second, or third base.
He headed back to the bag.

Case

(Slang) To examine carefully, as in planning a crime
Cased the bank before robbing it.

Bag

(preceded by "the") A breathalyzer, so named because it formerly had a plastic bag over the end to measure a set amount of breath.

Case

An actual event, situation, or fact.
For a change, in this case, he was telling the truth.
It is not the case that every unfamiliar phrase is an idiom.
In case of fire, break glass. [sign on fire extinguisher holder in public space]

Bag

(mathematics) A collection of objects, disregarding order, but (unlike a set) in which elements may be repeated.
A bag of three apples could be represented symbolically as {a,a,a}. Or, letting 'r' denote 'red apple' and 'g' denote 'green apple', then a bag of three red apples and two green apples could be denoted as {r,r,r,g,g}.

Case

A given condition or state.

Bag

A sac in animal bodies, containing some fluid or other substance.
The bag of poison in the mouth of some serpents
The bag of a cow

Case

A piece of work, specifically defined within a profession.
It was one of the detective's easiest cases.
Social workers should work on a maximum of forty active cases.
The doctor told us of an interesting case he had treated that morning.

Bag

A pouch tied behind a man's head to hold the back-hair of a wig; a bag wig.

Case

(academia) An instance or event as a topic of study.
The teaching consists of theory lessons and case studies.

Bag

The quantity of game bagged in a hunt.

Case

(legal) A legal proceeding, lawsuit.

Bag

A scrotum.

Case

(grammar) A specific inflection of a word (particularly a noun, pronoun, or adjective) depending on its function in the sentence.
The accusative case canonically indicates a direct object.
Latin has six cases, and remnants of a seventh.

Bag

(UK) A unit of measure of cement equal to 94 pounds.

Case

Grammatical cases and their meanings taken either as a topic in general or within a specific language.
Jane has been studying case in Caucasian languages.
Latin is a language that employs case.

Bag

A dark circle under the eye, caused by lack of sleep, drug addiction etc.

Case

(medicine) An instance of a specific condition or set of symptoms.
There were another five cases reported overnight.

Bag

(slang) A small envelope that contains drugs, especially narcotics.

Case

(programming) A section of code representing one of the actions of a conditional switch.

Bag

£1000, a grand.

Case

A box that contains or can contain a number of identical items of manufacture.

Bag

(informal) A large number or amount.

Case

A box, sheath, or covering generally.
A case for spectacles; the case of a watch

Bag

(transitive) To put into a bag.

Case

A piece of luggage that can be used to transport an apparatus such as a sewing machine.

Bag

(transitive) To take with oneself, to assume into one's score

Case

An enclosing frame or casing.
A door case; a window case

Bag

(informal) To catch or kill, especially when fishing or hunting.
We bagged three deer yesterday.

Case

A suitcase.

Bag

To gain possession of something, or to make first claim on something.

Case

A piece of furniture, constructed partially of transparent glass or plastic, within which items can be displayed.

Bag

(slang) To steal.

Case

The outer covering or framework of a piece of apparatus such as a computer.

Bag

(slang) To arrest.

Case

A shallow tray divided into compartments or "boxes" for holding type, traditionally arranged in sets of two, the "upper case" (containing capitals, small capitals, accented) and "lower case" (small letters, figures, punctuation marks, quadrats, and spaces).

Bag

(transitive) To furnish or load with a bag.

Case

The nature of a piece of alphabetic type, whether a “capital” (upper case) or “small” (lower case) letter.

Bag

To provide with artificial ventilation via a bag valve mask (BVM) resuscitator.

Case

(poker slang) Four of a kind.

Bag

To fit with a bag to collect urine.

Case

(US) A unit of liquid measure used to measure sales in the beverage industry, equivalent to 192 fluid ounces.

Bag

To expose exterior shape or physical behaviour resembling that of a bag

Case

(mining) A small fissure which admits water into the workings.

Bag

To (cause to) swell or hang down like a full bag.
The skin bags from containing morbid matter.
The brisk wind bagged the sails.

Case

A thin layer of harder metal on the surface of an object whose deeper metal is allowed to remain soft.

Bag

To hang like an empty bag.
His trousers bag at the knees.

Case

A cardboard box that holds (usually 24) beer bottles or cans.

Bag

To drop away from the correct course.

Case

A counterfeit crown five-shilling coin.

Bag

To become pregnant.

Case

(obsolete) to propose hypothetical cases

Bag

To forget, ignore, or get rid of.

Case

(transitive) To place (an item or items of manufacture) into a box, as in preparation for shipment.

Bag

To show particular puffy emotion

Case

(transitive) To cover or protect with, or as if with, a case; to enclose.

Bag

To swell with arrogance.

Case

To survey (a building or other location) surreptitiously, as in preparation for a robbery.

Bag

To laugh uncontrollably.

Case

(poker slang) The last remaining card of a particular rank.
He drew the case eight!

Bag

To criticise sarcastically.

Case

A box, sheath, or covering; as, a case for holding goods; a case for spectacles; the case of a watch; the case (capsule) of a cartridge; a case (cover) for a book.

Bag

A sack or pouch, used for holding anything; as, a bag of meal or of money.

Case

A box and its contents; the quantity contained in a box; as, a case of goods; a case of instruments.

Bag

A sac, or dependent gland, in animal bodies, containing some fluid or other substance; as, the bag of poison in the mouth of some serpents; the bag of a cow.

Case

A shallow tray divided into compartments or "boxes" for holding type.

Bag

A sort of silken purse formerly tied about men's hair behind, by way of ornament.

Case

An inclosing frame; a casing; as, a door case; a window case.

Bag

The quantity of game bagged.

Case

A small fissure which admits water to the workings.

Bag

A certain quantity of a commodity, such as it is customary to carry to market in a sack; as, a bag of pepper or hops; a bag of coffee.

Case

Chance; accident; hap; opportunity.
By aventure, or sort, or cas.

Bag

To put into a bag; as, to bag hops.

Case

That which befalls, comes, or happens; an event; an instance; a circumstance, or all the circumstances; condition; state of things; affair; as, a strange case; a case of injustice; the case of the Indian tribes.
In any case thou shalt deliver him the pledge.
If the case of the man be so with his wife.
And when a lady's in the caseYou know all other things give place.
You think this madness but a common case.
I am in case to justle a constable,

Bag

To seize, capture, or entrap; as, to bag an army; to bag game.

Case

A patient under treatment; an instance of sickness or injury; as, ten cases of fever; also, the history of a disease or injury.
A proper remedy in hypochondriacal cases.

Bag

To furnish or load with a bag or with a well filled bag.
A bee bagged with his honeyed venom.

Case

The matters of fact or conditions involved in a suit, as distinguished from the questions of law; a suit or action at law; a cause.
Let us consider the reason of the case, for nothing is law that is not reason.
Not one case in the reports of our courts.

Bag

To swell or hang down like a full bag; as, the skin bags from containing morbid matter.

Case

One of the forms, or the inflections or changes of form, of a noun, pronoun, or adjective, which indicate its relation to other words, and in the aggregate constitute its declension; the relation which a noun or pronoun sustains to some other word.
Case is properly a falling off from the nominative or first state of word; the name for which, however, is now, by extension of its signification, applied also to the nominative.

Bag

To swell with arrogance.

Case

To cover or protect with, or as with, a case; to inclose.
The man who, cased in steel, had passed whole days and nights in the saddle.

Bag

To become pregnant.

Case

To strip the skin from; as, to case a box.

Bag

A flexible container with a single opening;
He stuffed his laundry into a large bag

Case

To propose hypothetical cases.

Bag

The quantity of game taken in a particular period (usually by one person);
His bag included two deer

Case

A comprehensive term for any proceeding in a court of law whereby an individual seeks a legal remedy;
The family brought suit against the landlord

Bag

Place that runner must touch before scoring;
He scrambled to get back to the bag

Case

An occurrence of something;
It was a case of bad judgment
Another instance occurred yesterday
But there is always the famous example of the Smiths

Bag

A bag used for carrying money and small personal items or accessories (especially by women);
She reached into her bag and found a comb

Case

A special set of circumstances;
In that event, the first possibility is excluded
It may rain in which case the picnic will be canceled

Bag

The quantity that a bag will hold;
He ate a large bag of popcorn

Case

A problem requiring investigation;
Perry Mason solved the case of the missing heir

Bag

A portable rectangular traveling bag for carrying clothes;
He carried his small bag onto the plane with him

Case

The actual state of things;
That was not the case

Bag

An ugly or ill-tempered woman;
He was romancing the old bag for her money

Case

A statement of facts and reasons used to support an argument;
He stated his case clearly

Bag

Mammary gland of bovids (cows and sheep and goats)

Case

A portable container for carrying several objects;
The musicians left their instrument cases backstage

Bag

An activity that you like or at which you are superior;
Chemistry is not my cup of tea
His bag now is learning to play golf
Marriage was scarcely his dish

Case

A person who is subjected to experimental or other observational procedures; someone who is an object of investigation;
The subjects for this investigation were selected randomly
The cases that we studied were drawn from two different communities

Bag

Capture or kill, as in hunting;
Bag a few pheasants

Case

A person requiring professional services;
A typical case was the suburban housewife described by a marriage counselor

Bag

Hang loosely, like an empty bag

Case

The quantity contained in a case

Bag

Bulge out; form a bulge outward, or be so full as to appear to bulge

Case

A glass container used to store and display items in a shop or museum or home

Bag

Take unlawfully

Case

A specific state of mind that is temporary;
A case of the jitters

Bag

Put into a bag;
The supermarket clerk bagged the groceries

Case

Nouns or pronouns or adjectives (often marked by inflection) related in some way to other words in a sentence

Case

The housing or outer covering of something;
The clock has a walnut case

Case

A person of a specified kind (usually with many eccentricities);
A real character
A strange character
A friendly eccentric
The capable type
A mental case

Case

An enveloping structure or covering enclosing an animal or plant organ or part

Case

The enclosing frame around a door or window opening;
The casings had rotted away and had to be replaced

Case

Bed linen consisting of a cover for a pillow;
The burglar carried his loot in a pillowcase

Case

Look over, usually with the intention to rob;
They men cased the housed

Case

Enclose in, or as if in, a case;
My feet were encased in mud

Common Curiosities

Are cases less portable than bags?

Cases might be less comfortable to carry over distances without wheels due to their rigid structure and potentially heavier weight.

Can bags provide protection similar to cases?

Some bags are designed with padding to offer protection, but typically cases offer superior protection due to their rigid structure.

Can both bags and cases be used for travel?

Yes, both can be used for travel; bags for personal belongings and cases for items needing protection like cameras or laptops.

What is the primary difference between a bag and a case?

A bag is usually soft and flexible, ideal for carrying a variety of items, while a case is hard and protective, designed for specific contents.

Can a case be considered a type of bag?

In broad terms, a case can be a type of bag designed for specific protective purposes, but they are generally considered separate due to their distinct characteristics.

Do bags and cases come in standard sizes?

Both come in various sizes, but cases often have more standardized sizes to fit specific items like musical instruments or electronics.

How do you choose between a bag and a case?

Consider the items you're carrying, the level of protection needed, and portability requirements.

Are there items better suited to a bag than a case?

Items that do not require rigid protection and are more variable in size are better suited to bags.

Why do musicians often use cases instead of bags?

Musical instruments require protection from damage, making the rigid structure of cases more suitable.

Do professionals prefer cases over bags for their equipment?

Professionals who need to protect valuable equipment often prefer cases for their durability and protection.

Are there waterproof bags and cases?

Both bags and cases can be waterproof, but waterproof cases offer better protection against submersion.

Can cases be customized for specific items?

Yes, cases can be customized with specific compartments and padding to fit particular items securely.

How does the cost of bags compare to cases?

Cases, especially those designed for specific items, can be more expensive than bags due to their specialized construction.

Is it common for bags to have locks like cases?

Locks on bags are less common, as bags are typically designed for quick and easy access.

Can a bag be used inside a case for extra organization?

Yes, smaller bags can be used within larger cases for additional organization and easy access to various items.

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Author Spotlight

Written by
Fiza Rafique
Fiza Rafique is a skilled content writer at AskDifference.com, where she meticulously refines and enhances written pieces. Drawing from her vast editorial expertise, Fiza ensures clarity, accuracy, and precision in every article. Passionate about language, she continually seeks to elevate the quality of content for readers worldwide.
Co-written by
Maham Liaqat

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