common man vs actor

common man and actor both are nouns.

Word	Noun	Adjective	Verb	Adverb
common man	Yes	No	No	No
actor	Yes	No	No	No

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

Other hypernyms of common man include doer, worker.

common man (noun)	actor (noun)
a person who holds no title	a theatrical performer
	a person who acts and gets things done