screen actor vs thespian

screen actor and thespian both are nouns.

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

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

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

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

screen actor (adjective)	thespian (adjective)
	of or relating to drama