meliorist vs social reformer

meliorist and social reformer both are nouns.

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

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

Other synonyms of meliorist include crusader, reformer, reformist.

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