functionalist vs protagonist

functionalist and protagonist both are nouns.

Word	Noun	Adjective	Verb	Adverb
functionalist	Yes	No	No	No
protagonist	Yes	No	No	No

As nouns, protagonist is a hypernym of functionalist; that is, protagonist is a word with a broader meaning than functionalist:

Other hypernyms of functionalist include admirer, booster, champion, friend, supporter.

functionalist (noun)	protagonist (noun)
an adherent of functionalism	a person who backs a politician or a team etc.
	the principal character in a work of fiction