synthetic resin vs polymer

synthetic resin and polymer both are nouns.

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

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

synthetic resin: a resin having a polymeric structure; especially a resin in the raw state; used chiefly in plastics
polymer: a naturally occurring or synthetic compound consisting of large molecules made up of a linked series of repeated simple monomers

Other hypernyms of synthetic resin include resin, rosin.

synthetic resin (noun)	polymer (noun)
a resin having a polymeric structure; especially a resin in the raw state; used chiefly in plastics	a naturally occurring or synthetic compound consisting of large molecules made up of a linked series of repeated simple monomers