eristic vs reformer

eristic and reformer both are nouns.

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

As nouns, reformer is a hyponym of eristic; that is, reformer is a word with a more specific, narrower meaning than eristic:

eristic (noun)	reformer (noun)
the art of logical disputation (especially if specious)	an apparatus that reforms the molecular structure of hydrocarbons to produce richer fuel
a person who disputes; who is good at or enjoys controversy	a disputant who advocates reform

eristic (adjective)	reformer (adjective)
given to disputation for its own sake and often employing specious arguments