What does ACTION mean?

noun

1. something done (usually as opposed to something said)“there were stories of murders and other unnatural actions”
2. the state of being active“his sphere of activity”
3. a military engagement“he saw action in Korea”
4. a process existing in or produced by nature (rather than by the intent of human beings)“the action of natural forces”
5. the series of events that form a plot“his novels always have a lot of action”
6. the trait of being active and energetic and forceful“a man of action”
7. the operating part that transmits power to a mechanism“the piano had a very stiff action”
8. a judicial proceeding brought by one party against another; one party prosecutes another for a wrong done or for protection of a right or for prevention of a wrong