grey whale vs devilfish

grey whale and devilfish both are nouns.

Word	Noun	Adjective	Verb	Adverb
grey whale	Yes	No	No	No
devilfish	Yes	No	No	No

As nouns, grey whale and devilfish are synonyms defined as:

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

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

grey whale (noun)	devilfish (noun)
medium-sized greyish-black whale of the northern Pacific	extremely large pelagic tropical ray that feeds on plankton and small fishes; usually harmless but its size make it dangerous if harpooned
	bottom-living cephalopod having a soft oval body with eight long tentacles
	medium-sized greyish-black whale of the northern Pacific