screen actor vs histrion

screen actor and histrion both are nouns.

Word	Noun	Adjective	Verb	Adverb
screen actor	Yes	No	No	No
histrion	Yes	No	No	No

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

Other hypernyms of screen actor include actor, player, role player, thespian.

screen actor (noun)	histrion (noun)
an actor who plays a role in a film	a theatrical performer