kauri vs copal

kauri and copal both are nouns.

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

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

kauri: 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 (noun)	copal (noun)
tall timber tree of New Zealand having white straight-grained wood	a brittle aromatic resin used in varnishes
white close-grained wood of a tree of the genus Agathis especially Agathis australis
resin of the kauri trees of New Zealand; found usually as a fossil; also collected for making varnishes and linoleum