man of action vs worker

man of action and worker both are nouns.

Word	Noun	Adjective	Verb	Adverb
man of action	Yes	No	No	No
worker	Yes	No	No	No

As nouns, worker is a hypernym of man of action; that is, worker is a word with a broader meaning than man of action:

Other hypernyms of man of action include actor, doer.

man of action (noun)	worker (noun)
someone inclined to act first and think later	sterile member of a colony of social insects that forages for food and cares for the larvae
	a person who works at a specific occupation
	a member of the working class (not necessarily employed)
	a person who acts and gets things done