Globicephala melaena vs common blackfish

Globicephala melaena and common blackfish both are nouns.

Word	Noun	Adjective	Verb	Adverb
Globicephala melaena	Yes	No	No	No
common blackfish	Yes	No	No	No

As nouns, Globicephala melaena and common blackfish are synonyms defined as:

Globicephala melaena and common blackfish: 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 Globicephala melaena include black whale, blackfish, pilot whale.

Globicephala melaena (noun)	common blackfish (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