persona vs minor role

persona and minor role both are nouns.

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

As nouns, minor role is a hyponym of persona; that is, minor role is a word with a more specific, narrower meaning than persona:

Other hyponyms of persona include bit part, heavy, hero, ingenue, name part, title role, heroine, baddie, villain.

persona (noun)	minor role (noun)
(Jungian psychology) a personal facade that one presents to the world	a small role
an actor's portrayal of someone in a play