crusader vs social reformer

crusader and social reformer both are nouns.

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

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

Other synonyms of crusader include meliorist, reformer, reformist.

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