Atlantic moonfish vs horsehead

Atlantic moonfish and horsehead both are nouns.

Word	Noun	Adjective	Verb	Adverb
Atlantic moonfish	Yes	No	No	No
horsehead	Yes	No	No	No

As nouns, Atlantic moonfish and horsehead are synonyms defined as:

Atlantic moonfish and horsehead: any of several silvery marine fishes with very flat bodies

Other synonyms of Atlantic moonfish include dollarfish, horse-head, horsefish, moonfish, Selene setapinnis.

Atlantic moonfish (noun)	horsehead (noun)
any of several silvery marine fishes with very flat bodies	any of several silvery marine fishes with very flat bodies