activity

noun6

1. •
   The state or quality of being active; activeness.

   • Pit row was abuzz with activity.
2. •
   a thing that someone does, from a small movement to a big task

   • The activity for the morning was a walk to the store.
3. •
   Something done for pleasure or entertainment, especially one involving movement or an excursion.

   • An increasing number of sports activities are on offer at the university.
   • Quilting can be an enjoyable activity.
4. •
   The property of substances to react with other substances
5. •
   The number of radioactive decays per unit time. Unit for it: becquerel or curie
6. •
   The lexical aspect (aktionsart) of verbs or predicates that change over time and have no natural end point.