W: (v) work [Related to: worker] (exert oneself by doing mental or physical work for a purpose or out of necessity) "I will work hard to improve my grades"; "she worked hard for better living conditions for the poor"
S: (n) actor, doer, worker (a person who acts and gets things done) "he's a principal actor in this affair"; "when you want something done get a doer"; "he's a miracle worker"