Molva molva vs gadoid fish

Molva molva and gadoid fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
Molva molva	Yes	No	No	No
gadoid fish	Yes	No	No	No

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

Molva molva: elongated marine food fish of Greenland and northern Europe; often salted and dried
gadoid fish: a soft-finned fish of the family Gadidae

Other hypernyms of Molva molva include gadoid.

Molva molva (noun)	gadoid fish (noun)
elongated marine food fish of Greenland and northern Europe; often salted and dried	a soft-finned fish of the family Gadidae