the actions and activities assigned to or required or expected of a person or group | any specific behavior |
normal or customary activity of a person in a particular social setting | the trait of being active; moving or acting rapidly and energetically |
what something is used for | an organic process that takes place in the body |
an actor's portrayal of someone in a play | a process existing in or produced by nature (rather than by the intent of human beings) |
| the state of being active |
| (chemistry) the capacity of a substance to take part in a chemical reaction |