gray whale vs Eschrichtius robustus

gray whale and Eschrichtius robustus both are nouns.

Word	Noun	Adjective	Verb	Adverb
gray whale	Yes	No	No	No
Eschrichtius robustus	Yes	No	No	No

As nouns, gray whale and Eschrichtius robustus are synonyms defined as:

gray whale and Eschrichtius robustus: medium-sized greyish-black whale of the northern Pacific

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

gray whale (noun)	Eschrichtius robustus (noun)
medium-sized greyish-black whale of the northern Pacific	medium-sized greyish-black whale of the northern Pacific