cod vs gadoid fish

cod and gadoid fish both are nouns.

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

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

Other hypernyms of cod include gadoid.

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

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