gray snapper vs mangrove snapper

gray snapper and mangrove snapper both are nouns.

Word	Noun	Adjective	Verb	Adverb
gray snapper	Yes	No	No	No
mangrove snapper	Yes	No	No	No

As nouns, gray snapper and mangrove snapper are synonyms defined as:

gray snapper and mangrove snapper: found in shallow waters off the coast of Florida

Other synonyms of gray snapper include grey snapper, Lutjanus griseus.

gray snapper (noun)	mangrove snapper (noun)
found in shallow waters off the coast of Florida	found in shallow waters off the coast of Florida