finback vs Balaenoptera physalus

finback and Balaenoptera physalus both are nouns.

Word	Noun	Adjective	Verb	Adverb
finback	Yes	No	No	No
Balaenoptera physalus	Yes	No	No	No

As nouns, finback and Balaenoptera physalus are synonyms defined as:

finback and Balaenoptera physalus: large flat-headed whalebone whale having deep furrows along the throat; of Atlantic and Pacific

Other synonyms of finback include common rorqual, fin whale, finback whale.

finback (noun)	Balaenoptera physalus (noun)
large flat-headed whalebone whale having deep furrows along the throat; of Atlantic and Pacific	large flat-headed whalebone whale having deep furrows along the throat; of Atlantic and Pacific