role vs persona

role and persona both are nouns.

Word	Noun	Adjective	Verb	Adverb
role	Yes	No	No	No
persona	Yes	No	No	No

As nouns, role and persona are synonyms defined as:

Other synonyms of role include character, part, theatrical role.

role (noun)	persona (noun)
the actions and activities assigned to or required or expected of a person or group	(Jungian psychology) a personal facade that one presents to the world
normal or customary activity of a person in a particular social setting	an actor's portrayal of someone in a play
what something is used for
an actor's portrayal of someone in a play