horsefish vs horsehead

horsefish and horsehead both are nouns.

Word	Noun	Adjective	Verb	Adverb
horsefish	Yes	No	No	No
horsehead	Yes	No	No	No

As nouns, horsefish and horsehead are synonyms defined as:

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

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

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