Eschrichtius gibbosus vs grey whale

Eschrichtius gibbosus and grey whale both are nouns.

Word	Noun	Adjective	Verb	Adverb
Eschrichtius gibbosus	Yes	No	No	No
grey whale	Yes	No	No	No

As nouns, Eschrichtius gibbosus and grey whale are synonyms defined as:

Eschrichtius gibbosus and grey whale: medium-sized greyish-black whale of the northern Pacific

Other synonyms of Eschrichtius gibbosus include devilfish, Eschrichtius robustus, gray whale.

Eschrichtius gibbosus (noun)	grey whale (noun)
medium-sized greyish-black whale of the northern Pacific	medium-sized greyish-black whale of the northern Pacific