grey whale vs Eschrichtius gibbosus

grey whale and Eschrichtius gibbosus both are nouns.

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

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

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

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

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