wassailer vs protagonist

wassailer and protagonist both are nouns.

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

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

wassailer: someone who who drinks to the health of someone or the success of some venture
protagonist: a person who backs a politician or a team etc.

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

wassailer (noun)	protagonist (noun)
someone who enjoys riotous drinking	a person who backs a politician or a team etc.
someone who who drinks to the health of someone or the success of some venture	the principal character in a work of fiction