finback vs common rorqual

finback and common rorqual both are nouns.

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

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

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

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

finback (noun)	common rorqual (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