knock out vs work over

knock out and work over both are verbs.

Word	Noun	Adjective	Verb	Adverb
knock out	No	No	Yes	No
work over	No	No	Yes	No

As verbs, work over is a hypernym of knock out; that is, work over is a word with a broader meaning than knock out:

knock out: knock unconscious or senseless
work over: give a beating to; subject to a beating, either as a punishment or as an act of aggression

Other hypernyms of knock out include beat, beat up.

knock out (verb)	work over (verb)
destroy or break forcefully	give a beating to; subject to a beating, either as a punishment or as an act of aggression
eliminate
empty (as of tobacco) by knocking out
knock unconscious or senseless
overwhelm with admiration