horse-head vs dollarfish

horse-head and dollarfish both are nouns.

Word	Noun	Adjective	Verb	Adverb
horse-head	Yes	No	No	No
dollarfish	Yes	No	No	No

As nouns, horse-head and dollarfish are synonyms defined as:

horse-head and dollarfish: any of several silvery marine fishes with very flat bodies

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

horse-head (noun)	dollarfish (noun)
any of several silvery marine fishes with very flat bodies	small food fish of Atlantic coast
	any of several silvery marine fishes with very flat bodies