Molva molva vs gadoid

Molva molva and gadoid both are nouns.

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

As nouns, gadoid is a hypernym of Molva molva; that is, gadoid 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: a soft-finned fish of the family Gadidae

Other hypernyms of Molva molva include gadoid fish.

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