naphtha vs dissolving agent

naphtha and dissolving agent both are nouns.

Word	Noun	Adjective	Verb	Adverb
naphtha	Yes	No	No	No
dissolving agent	Yes	No	No	No

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

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

Other hypernyms of naphtha include hydrocarbon, dissolvent, dissolver, resolvent, solvent.

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