villain vs role

villain and role both are nouns.

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

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

Other hypernyms of villain include character, part, persona, theatrical role.

villain (noun)	role (noun)
a wicked or evil person; someone who does evil deliberately	the actions and activities assigned to or required or expected of a person or group
the principal bad character in a film or work of fiction	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