horsehead vs dollarfish

horsehead and dollarfish both are nouns.

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

As nouns, horsehead and dollarfish are synonyms defined as:

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

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

horsehead (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