theatrical role vs personation

theatrical role and personation both are nouns.

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

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

theatrical role: an actor's portrayal of someone in a play
personation: acting the part of a character on stage; dramatically representing the character by speech and action and gesture

Other hypernyms of theatrical role include characterization, enactment, portrayal.

theatrical role (noun)	personation (noun)
an actor's portrayal of someone in a play	imitating the mannerisms of another person
	acting the part of a character on stage; dramatically representing the character by speech and action and gesture