common rorqual vs finback

common rorqual and finback both are nouns.

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

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

common rorqual and finback: 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 whale.

common rorqual (noun)	finback (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