yellowtail vs yellowtail snapper

yellowtail and yellowtail snapper both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellowtail	Yes	No	No	No
yellowtail snapper	Yes	No	No	No

As nouns, yellowtail and yellowtail snapper are synonyms defined as:

yellowtail and yellowtail snapper: superior food fish of the tropical Atlantic and Caribbean with broad yellow stripe along the sides and on the tail

Other synonyms of yellowtail include Ocyurus chrysurus.

yellowtail (noun)	yellowtail snapper (noun)
superior food fish of the tropical Atlantic and Caribbean with broad yellow stripe along the sides and on the tail	superior food fish of the tropical Atlantic and Caribbean with broad yellow stripe along the sides and on the tail
game fish of southern California and Mexico having a yellow tail fin