role vs nonfunctional

role is a noun but nonfunctional is not a noun.

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

role (noun)	nonfunctional (noun)
the actions and activities assigned to or required or expected of a person or group
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

role (adjective)	nonfunctional (adjective)
	not having or performing a function
	not performing or able to perform its regular function