epoxy resin vs synthetic resin

epoxy resin and synthetic resin both are nouns.

Word	Noun	Adjective	Verb	Adverb
epoxy resin	Yes	No	No	No
synthetic resin	Yes	No	No	No

As nouns, synthetic resin is a hypernym of epoxy resin; that is, synthetic resin is a word with a broader meaning than epoxy resin:

epoxy resin: a thermosetting resin; used chiefly in strong adhesives and coatings and laminates
synthetic resin: a resin having a polymeric structure; especially a resin in the raw state; used chiefly in plastics

epoxy resin (noun)	synthetic resin (noun)
a thermosetting resin; used chiefly in strong adhesives and coatings and laminates	a resin having a polymeric structure; especially a resin in the raw state; used chiefly in plastics