pollack vs gadoid

pollack and gadoid both are nouns.

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

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

pollack: important food and game fish of northern seas (especially the northern Atlantic); related to cod
gadoid: a soft-finned fish of the family Gadidae

Other hypernyms of pollack include gadoid fish.

pollack (noun)	gadoid (noun)
important food and game fish of northern seas (especially the northern Atlantic); related to cod	a soft-finned fish of the family Gadidae
lean white flesh of North Atlantic fish; similar to codfish