movement, operation. 2.
Action, act, deed mean something done. Action applies especially to the doing, act to the result of the doing. An action usually lasts through some time and consists of more than one act: to take action on a petition.
An act is single: an act of kindness.
Deed emphasizes the finished or completed quality of an act; it may imply an act of some note, good or bad: an irrevocable deed; a deed of daring. 4.
brush, encounter, fight, skirmish. See battle1