What is the meaning of the word "activity"?

The word "activity" refers to a state of being active, involving actions or tasks that are performed by individuals or groups. It encompasses a broad range of actions, from physical endeavors to mental or social engagements.

Definitions:

(chemistry) the capacity of a substance to take part in a chemical reaction noun
- catalytic activity
an organic process that takes place in the body noun
- respiratory activity
any specific behavior noun
- they avoided all recreational activity
The degree to which something exhibits its characteristic properties. NOUN
- Enzyme activity is a measure of how effectively an enzyme catalyzes a reaction.
the state of being active noun
- Our weekend activities included hiking and tennis.
- Your sphere of activity is pretty large.