resin vs natural resin

resin and natural resin both are nouns.

Word	Noun	Adjective	Verb	Adverb
resin	Yes	No	No	No
natural resin	Yes	No	No	No

As nouns, natural resin is a hyponym of resin; that is, natural resin is a word with a more specific, narrower meaning than resin:

resin: any of a class of solid or semisolid viscous substances obtained either as exudations from certain plants or prepared by polymerization of simple molecules
natural resin: a plant exudate

Other hyponyms of resin include East India kino, kino gum, Malabar kino, synthetic resin.

resin (noun)	natural resin (noun)
any of a class of solid or semisolid viscous substances obtained either as exudations from certain plants or prepared by polymerization of simple molecules	a plant exudate