humpback whale vs Megaptera novaeangliae

humpback whale and Megaptera novaeangliae both are nouns.

Word	Noun	Adjective	Verb	Adverb
humpback whale	Yes	No	No	No
Megaptera novaeangliae	Yes	No	No	No

As nouns, humpback whale and Megaptera novaeangliae are synonyms defined as:

humpback whale and Megaptera novaeangliae: large whalebone whale with long flippers noted for arching or humping its back as it dives

Other synonyms of humpback whale include humpback.

humpback whale (noun)	Megaptera novaeangliae (noun)
large whalebone whale with long flippers noted for arching or humping its back as it dives	large whalebone whale with long flippers noted for arching or humping its back as it dives