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Sugar vs. Starch — What's the Difference?

By Tayyaba Rehman — Updated on September 21, 2023
Sugar is a sweet crystalline substance used as a sweetener, while starch is a complex carbohydrate found in plants used for energy storage.
Sugar vs. Starch — What's the Difference?

Difference Between Sugar and Starch

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Key Differences

Sugar and starch are both carbohydrates, crucial to our diet. Sugar, often extracted from sugarcane or sugar beet, provides immediate energy when consumed. It's commonly used in culinary applications to sweeten food and drinks.
On the other hand, starch is a complex carbohydrate commonly found in grains, legumes, and certain vegetables. Unlike sugar, which offers a burst of energy, starches provide sustained energy as they break down over time in our system.
While both sugar and starch can be derived from plant sources, their tastes differ considerably. Sugar is inherently sweet, making it a popular additive to satisfy our sweet cravings. Starch, however, is typically tasteless and is not used as a flavoring.
From a nutritional standpoint, sugar, especially in excess, can lead to weight gain and other health issues. Starches, when derived from whole grains and vegetables, are considered more nutritionally dense, offering additional minerals and vitamins.
To sum it up, while both sugar and starch are essential dietary carbohydrates, sugar is a sweet-tasting simple carbohydrate and starch is a complex carbohydrate offering prolonged energy.
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Comparison Chart

Type of Carbohydrate

Simple
Complex

Taste

Sweet
Generally tasteless

Digestion

Quick and provides immediate energy
Slower, providing sustained energy

Common Sources

Sugarcane, sugar beet
Grains, legumes, certain vegetables

Nutritional Implications

High consumption can lead to health issues
Whole grain and vegetable sources are nutritionally dense

Compare with Definitions

Sugar

A sweet crystalline substance obtained from various plants.
I added some sugar to my coffee to make it sweet.

Starch

Firmness of manner or bearing.
His starch demeanor was intimidating.

Sugar

A class of edible crystalline substances.
Glucose and fructose are types of sugar.

Starch

A white, tasteless carbohydrate used as a food ingredient.
The sauce has a base of corn starch.

Sugar

Sugar is the generic name for sweet-tasting, soluble carbohydrates, many of which are used in food. Table sugar, granulated sugar, or regular sugar, refers to sucrose, a disaccharide composed of glucose and fructose.

Starch

To stiffen with a starchy substance.
She starched the curtains to make them hang straight.

Sugar

A sweet crystalline or powdered substance, white when pure, consisting of sucrose obtained mainly from sugarcane and sugar beets and used in many foods, drinks, and medicines to improve their taste. Also called table sugar.

Starch

A carbohydrate found in certain plants, used for energy storage.
Potatoes are high in starch.

Sugar

Any of a class of water-soluble crystalline carbohydrates, including sucrose and lactose, having a characteristically sweet taste and classified as monosaccharides, disaccharides, and trisaccharides.

Starch

Starch or amylum is a polymeric carbohydrate consisting of numerous glucose units joined by glycosidic bonds. This polysaccharide is produced by most green plants for energy storage.

Sugar

A unit, such as a lump or cube, in which sugar is dispensed or taken.

Starch

An odourless, tasteless white substance occurring widely in plant tissue and obtained chiefly from cereals and potatoes. It is a polysaccharide which functions as a carbohydrate store and is an important constituent of the human diet.

Sugar

(Slang) Sweetheart. Used as a term of endearment.

Starch

Powder or spray made from starch and used before ironing to stiffen fabric or clothing
Crisp linen, stiff with starch

Sugar

To coat, cover, or sweeten with sugar.

Starch

Stiffness of manner or character
The starch in her voice

Sugar

To make less distasteful or more appealing.

Starch

Stiffen (fabric or clothing) with starch
Starch your collar to keep it straight and stiff

Sugar

To form sugar.

Starch

(of a boxer) defeat (an opponent) by a knockout
Ray Domenge starched Jeff Geddami in the first

Sugar

To form granules; granulate.

Starch

A naturally abundant nutrient carbohydrate, (C6H10O5)n, found chiefly in the seeds, fruits, tubers, roots, and stem pith of plants, notably in corn, potatoes, wheat, and rice, and varying widely in appearance according to source but commonly prepared as a white amorphous tasteless powder.

Sugar

To make sugar or syrup from sugar maple sap. Often used with off.

Starch

Any of various substances, such as natural starch, used to stiffen cloth, as in laundering.

Sugar

(uncountable) Sucrose in the form of small crystals, obtained from sugar cane or sugar beet and used to sweeten food and drink.

Starch

Starches Foods having a high content of starch, as rice, breads, and potatoes.

Sugar

(countable) A specific variety of sugar.

Starch

Stiff behavior
"Dobbs, the butler ... isn't as stiff as he used to be.
Ann, my brother's new wife, has loosened up his starch a bit" (Jennifer St. Giles).

Sugar

Any of various small carbohydrates that are used by organisms to store energy.

Starch

Vigor; mettle
"Business travel can take the starch out of the most self-assured corporate titan" (Lisa Faye Kaplan).

Sugar

(countable) A small serving of this substance (typically about one teaspoon), used to sweeten a drink.
He usually has his coffee white with one sugar.

Starch

To stiffen with starch.

Sugar

(countable) A term of endearment.
I'll be with you in a moment, sugar.

Starch

(uncountable) A widely diffused vegetable substance, found especially in seeds, bulbs and tubers, as extracted (e.g. from potatoes, corn, rice, etc.) in the form of a white, glistening, granular or powdery substance, without taste or smell, and giving a very peculiar creaking sound when rubbed between the fingers. It is used as a food, in the production of commercial grape sugar, for stiffening linen in laundries, in making paste, etc.

Sugar

A kiss.

Starch

Carbohydrates, as with grain and potato based foods.

Sugar

Effeminacy in a male, often implying homosexuality.
I think John has a little bit of sugar in him.

Starch

(uncountable) A stiff, formal manner; formality.

Sugar

Diabetes.

Starch

(uncountable) Fortitude.

Sugar

(dated) Anything resembling sugar in taste or appearance, especially in chemistry.
Sugar of lead (lead acetate) is a poisonous white crystalline substance with a sweet taste.

Starch

(countable) Any of various starch-like substances used as a laundry stiffener

Sugar

Compliment or flattery used to disguise or render acceptable something obnoxious; honeyed or soothing words.

Starch

To apply or treat with laundry starch, to create a hard, smooth surface.
She starched her blouses.

Sugar

Heroin.

Starch

Stiff; precise; rigid.

Sugar

Money.

Starch

Stiff; precise; rigid.

Sugar

(programming) syntactic sugar.

Starch

A widely diffused vegetable substance found especially in seeds, bulbs, and tubers, and extracted (as from potatoes, corn, rice, etc.) as a white, glistening, granular or powdery substance, without taste or smell, and giving a very peculiar creaking sound when rubbed between the fingers. It is used as a food, in the production of commercial grape sugar, for stiffening linen in laundries, in making paste, etc.

Sugar

(transitive) To add sugar to; to sweeten with sugar.
John heavily sugars his coffee.

Starch

Fig.: A stiff, formal manner; formality.

Sugar

(transitive) To make (something unpleasant) seem less so.
She has a gift for sugaring what would otherwise be harsh words.

Starch

To stiffen with starch.

Sugar

In making maple sugar, to complete the process of boiling down the syrup till it is thick enough to crystallize; to approach or reach the state of granulation; with the preposition off.

Starch

A complex carbohydrate found chiefly in seeds, fruits, tubers, roots and stem pith of plants, notably in corn, potatoes, wheat, and rice; an important foodstuff and used otherwise especially in adhesives and as fillers and stiffeners for paper and textiles

Sugar

(entomology) To apply sugar to trees or plants in order to catch moths.

Starch

Stiffen with starch;
Starch clothes

Sugar

To rewrite (source code) using syntactic sugar.

Starch

A substance used to stiffen fabrics.
I used starch to crisp up my shirt collar.

Sugar

(transitive) To compliment (a person).

Sugar

To remove hair using a paste of sugar, water, and lemon juice.

Sugar

(minced oath) Used in place of shit!
Oh, sugar!

Sugar

A sweet white (or brownish yellow) crystalline substance, of a sandy or granular consistency, obtained by crystallizing the evaporated juice of certain plants, as the sugar cane, sorghum, beet root, sugar maple, etc. It is used for seasoning and preserving many kinds of food and drink. Ordinary sugar is essentially sucrose. See the Note below.

Sugar

By extension, anything resembling sugar in taste or appearance; as, sugar of lead (lead acetate), a poisonous white crystalline substance having a sweet taste.

Sugar

Compliment or flattery used to disguise or render acceptable something obnoxious; honeyed or soothing words.
Why, do not or know you, grannam, and that sugar loaf?

Sugar

In making maple sugar, to complete the process of boiling down the sirup till it is thick enough to crystallize; to approach or reach the state of granulation; - with the preposition off.

Sugar

To impregnate, season, cover, or sprinkle with sugar; to mix sugar with.

Sugar

To cover with soft words; to disguise by flattery; to compliment; to sweeten; as, to sugar reproof.
With devotion's visageAnd pious action we do sugar o'erThe devil himself.

Sugar

A white crystalline carbohydrate used as a sweetener and preservative

Sugar

An essential structural component of living cells and source of energy for animals; includes simple sugars with small molecules as well as macromolecular substances; are classified according to the number of monosaccharide groups they contain

Sugar

Informal terms for money

Sugar

Sweeten with sugar;
Sugar your tea

Sugar

An informal term for a sweet person.
She's such a sugar, always helping out.

Sugar

Energy; pep.
After the candy, he was all sugar and ran around the park.

Sugar

Affectionate form of address.
Hey sugar, how was your day?

Common Curiosities

What are common sources of starch?

Grains, legumes, and certain vegetables are rich in starch.

Can starch be used to stiffen clothes?

Yes, starch is often used to stiffen fabrics.

Are sugar and starch both carbohydrates?

Yes, both sugar and starch are carbohydrates.

Is sugar always sweet?

Yes, sugar is inherently sweet.

Does sugar provide immediate energy?

Yes, sugar offers a quick burst of energy.

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Author Spotlight

Written by
Tayyaba Rehman
Tayyaba Rehman is a distinguished writer, currently serving as a primary contributor to askdifference.com. As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.

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