cero vs Spanish mackerel

cero and Spanish mackerel both are nouns.

Word	Noun	Adjective	Verb	Adverb
cero	Yes	No	No	No
Spanish mackerel	Yes	No	No	No

As nouns, Spanish mackerel is a hypernym of cero; that is, Spanish mackerel is a word with a broader meaning than cero:

cero: large edible mackerel of temperate United States coastal Atlantic waters
Spanish mackerel: any of several large marine food fishes of the genus Scomberomorus

As nouns, Spanish mackerel is a hypernym of cero; that is, Spanish mackerel is a word with a broader meaning than cero:

cero: large mackerel with long pointed snout; important food and game fish of the eastern Atlantic coast southward to Brazil
Spanish mackerel: any of several large marine food fishes of the genus Scomberomorus

cero (noun)	Spanish mackerel (noun)
large edible mackerel of temperate United States coastal Atlantic waters	any of several large marine food fishes of the genus Scomberomorus
large mackerel with long pointed snout; important food and game fish of the eastern Atlantic coast southward to Brazil	medium-sized mackerel of temperate Atlantic and Gulf of Mexico
	a California food fish
	flesh of commercially important fishes especially of the Atlantic coastal waters of America