[1] : WordNet (r) 2.0

natural action
     n : a process existing in or produced by nature rather than by
         the intent of human beings; "the action of natural
         forces"; "volcanic activity" syn: natural process, action,
          activity
see also:
natural process action activity 

Action >> A Words
Action, definition of term: Action
action_pag1.html

Action Replay >> A Words
Action Replay, definition of term: Action Replay
action+replay_pag1.html

Action Potentia >> A Words
Action Potentia, definition of term: Action Potentia
action+potentia_pag1.html

Direct Action >> D Words
Direct Action, definition of term: Direct Action
direct+action_pag1.html

Civil Action >> C Words
Civil Action, definition of term: Civil Action
civil+action_pag1.html