abolitionist vs reformer

abolitionist and reformer both are nouns.

Word	Noun	Adjective	Verb	Adverb
abolitionist	Yes	No	No	No
reformer	Yes	No	No	No

As nouns, reformer is a hypernym of abolitionist; that is, reformer is a word with a broader meaning than abolitionist:

Other hypernyms of abolitionist include crusader, meliorist, reformist, social reformer.

abolitionist (noun)	reformer (noun)
a reformer who favors abolishing slavery	an apparatus that reforms the molecular structure of hydrocarbons to produce richer fuel
	a disputant who advocates reform