tautog vs blackfish

tautog and blackfish both are nouns.

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

As nouns, tautog and blackfish are synonyms defined as:

tautog and blackfish: large dark-colored food fish of the Atlantic coast of North America

Other synonyms of tautog include Tautoga onitis.

tautog (noun)	blackfish (noun)
large dark-colored food fish of the Atlantic coast of North America	female salmon that has recently spawned
	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