Coryphaena equisetis vs dolphin

Coryphaena equisetis and dolphin both are nouns.

Word	Noun	Adjective	Verb	Adverb
Coryphaena equisetis	Yes	No	No	No
dolphin	Yes	No	No	No

As nouns, dolphin is a hypernym of Coryphaena equisetis; that is, dolphin is a word with a broader meaning than Coryphaena equisetis:

Coryphaena equisetis: a kind of dolphinfish
dolphin: large slender food and game fish widely distributed in warm seas (especially around Hawaii)

Other hypernyms of Coryphaena equisetis include dolphinfish, mahimahi.

Coryphaena equisetis (noun)	dolphin (noun)
a kind of dolphinfish	any of various small toothed whales with a beaklike snout; larger than porpoises
	large slender food and game fish widely distributed in warm seas (especially around Hawaii)