Balaenoptera physalus vs fin whale

Balaenoptera physalus and fin whale both are nouns.

Word	Noun	Adjective	Verb	Adverb
Balaenoptera physalus	Yes	No	No	No
fin whale	Yes	No	No	No

As nouns, Balaenoptera physalus and fin whale are synonyms defined as:

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

Other synonyms of Balaenoptera physalus include common rorqual, finback, finback whale.

Balaenoptera physalus (noun)	fin whale (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