heroine vs theatrical role

heroine and theatrical role both are nouns.

Word	Noun	Adjective	Verb	Adverb
heroine	Yes	No	No	No
theatrical role	Yes	No	No	No

As nouns, theatrical role is a hypernym of heroine; that is, theatrical role is a word with a broader meaning than heroine:

Other hypernyms of heroine include character, part, persona, role, adult female, woman.

heroine (noun)	theatrical role (noun)
a woman possessing heroic qualities or a woman who has performed heroic deeds	an actor's portrayal of someone in a play
the main good female character in a work of fiction