showman vs actor

showman and actor both are nouns.

Word	Noun	Adjective	Verb	Adverb
showman	Yes	No	No	No
actor	Yes	No	No	No

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

Other hypernyms of showman include doer, worker.

showman (noun)	actor (noun)
a sponsor who books and stages public entertainments	a theatrical performer
a person skilled at making effective presentations	a person who acts and gets things done