naphtha vs solvent

naphtha and solvent both are nouns.

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

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

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

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

naphtha (noun)	solvent (noun)
any of various volatile flammable liquid hydrocarbon mixtures; used chiefly as solvents	a statement that solves a problem or explains how to solve the problem
	a liquid substance capable of dissolving other substances

naphtha (adjective)	solvent (adjective)
	capable of meeting financial obligations