gadoid fish vs gadoid

gadoid fish and gadoid both are nouns.

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

As nouns, gadoid fish and gadoid are synonyms defined as:

gadoid fish (noun)	gadoid (noun)
a soft-finned fish of the family Gadidae	a soft-finned fish of the family Gadidae