birth-control reformer vs birth-control campaigner

birth-control reformer and birth-control campaigner both are nouns.

Word	Noun	Adjective	Verb	Adverb
birth-control reformer	Yes	No	No	No
birth-control campaigner	Yes	No	No	No

As nouns, birth-control reformer and birth-control campaigner are synonyms defined as:

birth-control reformer and birth-control campaigner: a social reformer who advocates birth control and family planning

birth-control reformer (noun)	birth-control campaigner (noun)
a social reformer who advocates birth control and family planning	a social reformer who advocates birth control and family planning