white croaker vs croaker

white croaker and croaker both are nouns.

Word	Noun	Adjective	Verb	Adverb
white croaker	Yes	No	No	No
croaker	Yes	No	No	No

As nouns, croaker is a hypernym of white croaker; that is, croaker is a word with a broader meaning than white croaker:

As nouns, croaker is a hypernym of white croaker; that is, croaker is a word with a broader meaning than white croaker:

white croaker: silvery and bluish drumfish of shallow California coastal waters
croaker: any of several fishes that make a croaking noise

white croaker (noun)	croaker (noun)
small silvery marine food fish found off California	any of several fishes that make a croaking noise
silvery and bluish drumfish of shallow California coastal waters	the lean flesh of a saltwater fish caught along Atlantic coast of southern U.S.