common rorqual vs finback whale

common rorqual and finback whale both are nouns.

Word	Noun	Adjective	Verb	Adverb
common rorqual	Yes	No	No	No
finback whale	Yes	No	No	No

As nouns, common rorqual and finback whale are synonyms defined as:

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

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

common rorqual (noun)	finback 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