naphtha vs resolvent

naphtha and resolvent both are nouns.

Word	Noun	Adjective	Verb	Adverb
naphtha	Yes	No	No	No
resolvent	Yes	No	No	No

As nouns, resolvent is a hypernym of naphtha; that is, resolvent is a word with a broader meaning than naphtha:

naphtha: any of various volatile flammable liquid hydrocarbon mixtures; used chiefly as solvents
resolvent: a liquid substance capable of dissolving other substances

Other hypernyms of naphtha include hydrocarbon, dissolvent, dissolver, dissolving agent, solvent.

naphtha (noun)	resolvent (noun)
any of various volatile flammable liquid hydrocarbon mixtures; used chiefly as solvents	a liquid substance capable of dissolving other substances