common blackfish vs pilot whale

common blackfish and pilot whale both are nouns.

Word	Noun	Adjective	Verb	Adverb
common blackfish	Yes	No	No	No
pilot whale	Yes	No	No	No

As nouns, common blackfish and pilot whale are synonyms defined as:

common blackfish and pilot whale: small dark-colored whale of the Atlantic coast of the United States; the largest male acts as pilot or leader for the school

Other synonyms of common blackfish include black whale, blackfish, Globicephala melaena.

common blackfish (noun)	pilot whale (noun)
small dark-colored whale of the Atlantic coast of the United States; the largest male acts as pilot or leader for the school	small dark-colored whale of the Atlantic coast of the United States; the largest male acts as pilot or leader for the school