humpback vs Megaptera novaeangliae

humpback and Megaptera novaeangliae both are nouns.

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

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

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

Other synonyms of humpback include humpback whale.

humpback (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
a person whose back is hunched because of abnormal curvature of the upper spine
an abnormal backward curve to the vertebral column