Whig vs protagonist

Whig and protagonist both are nouns.

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

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

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

Whig (noun)	protagonist (noun)
a member of the political party that urged social reform in 18th and 19th century England; was the opposition party to the Tories	a person who backs a politician or a team etc.
a supporter of the American Revolution	the principal character in a work of fiction
a member of the Whig Party that existed in the United States before the American Civil War