social reformer vs reformist

social reformer and reformist both are nouns.

Word	Noun	Adjective	Verb	Adverb
social reformer	Yes	No	No	No
reformist	Yes	Yes	No	No

As nouns, social reformer and reformist are synonyms defined as:

Other synonyms of social reformer include crusader, meliorist, reformer.

social reformer (noun)	reformist (noun)
a disputant who advocates reform	a disputant who advocates reform

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