kauri gum vs copal

kauri gum and copal both are nouns.

Word	Noun	Adjective	Verb	Adverb
kauri gum	Yes	No	No	No
copal	Yes	No	No	No

As nouns, copal is a hypernym of kauri gum; that is, copal is a word with a broader meaning than kauri gum:

kauri gum: resin of the kauri trees of New Zealand; found usually as a fossil; also collected for making varnishes and linoleum
copal: a brittle aromatic resin used in varnishes

kauri gum (noun)	copal (noun)
resin of the kauri trees of New Zealand; found usually as a fossil; also collected for making varnishes and linoleum	a brittle aromatic resin used in varnishes