Synonyms: activeness, activity
Definition: the trait of being active; moving or acting rapidly and energetically
Usage: the level of activity declines with age
Similar words: trait
Definition: a distinguishing feature of your personal nature
Synonyms: action, activeness, activity
Definition: the state of being active
Usage: his sphere of activity; he is out of action
Similar words: state
Definition: the way something is with respect to its main attributes
Usage: the current state of knowledge; his state of health; in a weak financial state