protester vs reformist

protester and reformist both are nouns.

Word	Noun	Adjective	Verb	Adverb
protester	Yes	No	No	No
reformist	Yes	Yes	No	No

As nouns, reformist is a hypernym of protester; that is, reformist is a word with a broader meaning than protester:

Other hypernyms of protester include crusader, meliorist, reformer, social reformer.

protester (noun)	reformist (noun)
someone who participates in a public display of group feeling	a disputant who advocates reform
a person who dissents from some established policy

protester (adjective)	reformist (adjective)
	favoring or promoting reform (often by government action)