persona vs role

persona and role both are nouns.

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

As nouns, persona and role are synonyms defined as:

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

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