Elops saurus vs tarpon

Elops saurus and tarpon both are nouns.

Word	Noun	Adjective	Verb	Adverb
Elops saurus	Yes	No	No	No
tarpon	Yes	No	No	No

As nouns, tarpon is a hypernym of Elops saurus; that is, tarpon is a word with a broader meaning than Elops saurus:

Elops saurus: game fish resembling the tarpon but smaller
tarpon: large silvery game fish of warm Atlantic coastal waters especially off Florida

Other hypernyms of Elops saurus include Tarpon atlanticus.

Elops saurus (noun)	tarpon (noun)
game fish resembling the tarpon but smaller	large silvery game fish of warm Atlantic coastal waters especially off Florida