barrelfish vs stromateid

barrelfish and stromateid both are nouns.

Word	Noun	Adjective	Verb	Adverb
barrelfish	Yes	No	No	No
stromateid	Yes	No	No	No

As nouns, stromateid is a hypernym of barrelfish; that is, stromateid is a word with a broader meaning than barrelfish:

barrelfish: blackish fish of New England waters
stromateid: small marine fish with a short compressed body and feeble spines

Other hypernyms of barrelfish include butterfish, stromateid fish.

barrelfish (noun)	stromateid (noun)
blackish fish of New England waters	small marine fish with a short compressed body and feeble spines