mammal vs digitigrade

mammal and digitigrade both are nouns.

Word	Noun	Adjective	Verb	Adverb
mammal	Yes	No	No	No
digitigrade	Yes	Yes	No	No

mammal (noun)	digitigrade (noun)
any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and nourished with milk	an animal that walks so that only the toes touch the ground as e.g. dogs and cats and horses

mammal (adjective)	digitigrade (adjective)
	(of mammals) walking on the toes with the posterior part of the foot raised (as cats, dogs, and horses do)