sheepshead vs sparid fish

sheepshead and sparid fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
sheepshead	Yes	No	No	No
sparid fish	Yes	No	No	No

As nouns, sparid fish is a hypernym of sheepshead; that is, sparid fish is a word with a broader meaning than sheepshead:

sheepshead: large (up to 20 lbs) food fish of the eastern coast of the United States and Mexico
sparid fish: spiny-finned food fishes of warm waters having well-developed teeth

Other hypernyms of sheepshead include sparid.

sheepshead (noun)	sparid fish (noun)
large (up to 20 lbs) food fish of the eastern coast of the United States and Mexico	spiny-finned food fishes of warm waters having well-developed teeth