blackfish vs wrasse

blackfish and wrasse both are nouns.

Word	Noun	Adjective	Verb	Adverb
blackfish	Yes	No	No	No
wrasse	Yes	No	No	No

As nouns, wrasse is a hypernym of blackfish; that is, wrasse is a word with a broader meaning than blackfish:

blackfish: large dark-colored food fish of the Atlantic coast of North America
wrasse: chiefly tropical marine fishes with fleshy lips and powerful teeth; usually brightly colored

blackfish (noun)	wrasse (noun)
female salmon that has recently spawned	chiefly tropical marine fishes with fleshy lips and powerful teeth; usually brightly colored
small dark-colored whale of the Atlantic coast of the United States; the largest male acts as pilot or leader for the school
large dark-colored food fish of the Atlantic coast of North America