prohibitionist vs reformer

prohibitionist and reformer both are nouns.

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

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

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

prohibitionist (noun)	reformer (noun)
a reformer who opposes the use of intoxicating beverages	an apparatus that reforms the molecular structure of hydrocarbons to produce richer fuel
	a disputant who advocates reform