Gadus morhua vs cod

Gadus morhua and cod both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gadus morhua	Yes	No	No	No
cod	Yes	Yes	Yes	No

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

Other hypernyms of Gadus morhua include codfish.

Gadus morhua (noun)	cod (noun)
one of the world's most important commercial fishes	major food fish of Arctic and cold-temperate waters
	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)

Gadus morhua (adjective)	cod (adjective)
	payable by the recipient on delivery

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