Eschrichtius gibbosus vs Eschrichtius robustus

Eschrichtius gibbosus and Eschrichtius robustus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Eschrichtius gibbosus	Yes	No	No	No
Eschrichtius robustus	Yes	No	No	No

As nouns, Eschrichtius gibbosus and Eschrichtius robustus are synonyms defined as:

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

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

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