Act vs. Activity — What's the Difference?

The process of doing or performing something

The state of being active.

Something done or performed; a deed

Energetic action or movement; liveliness.

(Law) Something done that has legal significance

A specified pursuit in which a person partakes.

A statute or other law formally adopted by a legislative body

An educational process or procedure intended to stimulate learning through actual experience.

A formal written record of proceedings or transactions.

The intensity of a radioactive source.

One of the major divisions of a play, opera, or film.

The ability to take part in a chemical reaction.

A performance or entertainment usually forming part of a longer presentation

A physiological process

The actor or actors presenting such a performance

(uncountable) The state or quality of being active; activeness.

A manifestation of intentional or unintentional insincerity; a pose

(countable) Something done as an action or a movement.

To play the part of; assume the dramatic role of

(countable) Something done for pleasure or entertainment, especially one involving movement or an excursion.

To perform (a role) on the stage

The lexical aspect (aktionsart) of verbs or predicates that change over time and have no natural end point.

To behave like or pose as; impersonate

(physics) The number of radioactive decays per unit time. Unit for it: becquerel or curie Category:en:Radioactivity

To behave in a manner suitable for

The propery of substances to react with other substances

To behave or comport oneself

The state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force; as, an increasing variety of human activities.

To perform in a dramatic role or roles.

Any specific activity;

To be suitable for theatrical performance

The state of being active;

To behave affectedly or unnaturally; pretend.

An organic process that takes place in the body;

To appear or seem to be

(chemistry) the capacity of a substance to take part in a chemical reaction;

To carry out an action

A process existing in or produced by nature (rather than by the intent of human beings);

To operate or function in a specific way

The trait of being active; moving or acting rapidly and energetically;

To serve or function as a substitute for another

To produce an effect

(countable) Something done, a deed.

Actuality.

(theology) Something done once and for all, as distinguished from a work.

A product of a legislative body, a statute.

The process of doing something.

(countable) A formal or official record of something done.

A division of a theatrical performance.

(countable) A performer or performers in a show.

(countable) Any organized activity.

(countable) A display of behaviour.

A thesis maintained in public, in some English universities, by a candidate for a degree, or to show the proficiency of a student.

(countable) A display of behaviour meant to deceive.

Senseid|en|act of parliament}} (law) {{ellipsis of act of parliament

(intransitive) To do something.

To do (something); to perform.

(intransitive) To perform a theatrical role.

(intransitive) Of a play: to be acted out (well or badly).

(intransitive) To behave in a certain manner for an indefinite length of time.

(copulative) To convey an appearance of being.

(intransitive) To do something that causes a change binding on the doer.

To have an effect (on).

(transitive) To play (a role).

(transitive) To feign.

To map via a homomorphism to a group of automorphisms (of).

To move to action; to actuate; to animate.

To enact; to decree.

That which is done or doing; the exercise of power, or the effect, of which power exerted is the cause; a performance; a deed.

A state of reality or real existence as opposed to a possibility or possible existence.

Process of doing; action. In act, in the very doing; on the point of (doing).

To move to action; to actuate; to animate.

To perform; to execute; to do.

To perform, as an actor; to represent dramatically on the stage.

To assume the office or character of; to play; to personate; as, to act the hero.

To feign or counterfeit; to simulate.

To exert power; to produce an effect; as, the stomach acts upon food.

To perform actions; to fulfill functions; to put forth energy; to move, as opposed to remaining at rest; to carry into effect a determination of the will.

To behave or conduct, as in morals, private duties, or public offices; to bear or deport one's self; as, we know not why he has acted so.

To perform on the stage; to represent a character.

A legal document codifying the result of deliberations of a committee or society or legislative body

Something that people do or cause to happen

A subdivision of a play or opera or ballet

A short theatrical performance that is part of a longer program;

A manifestation of insincerity;

Perform an action, or work out or perform (an action);

Behave in a certain manner; show a certain behavior; conduct or comport oneself;

Play a role or part;

Discharge one's duties;

Pretend to have certain qualities or state of mind;

Be suitable for theatrical performance;

Have an effect or outcome; often the one desired or expected;

Be engaged in an activity, often for no particular purpose other than pleasure

Behave unnaturally or affectedly;

Perform on a stage or theater;