cod vs gadoid

cod and gadoid both are nouns.

Word	Noun	Adjective	Verb	Adverb
cod	Yes	Yes	Yes	No
gadoid	Yes	No	No	No

As nouns, gadoid is a hypernym of cod; that is, gadoid is a word with a broader meaning than cod:

Other hypernyms of cod include gadoid fish.

cod (noun)	gadoid (noun)
major food fish of Arctic and cold-temperate waters	a soft-finned fish of the family Gadidae
lean white flesh of important North Atlantic food fish; usually baked or poached
the vessel that contains the seeds of a plant (not the seeds themselves)

cod (adjective)	gadoid (adjective)
payable by the recipient on delivery

cod (verb)	gadoid (verb)
harass with persistent criticism or carping
fool or hoax