digitigrade mammal vs eutherian

digitigrade mammal and eutherian both are nouns.

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

As nouns, eutherian is a hypernym of digitigrade mammal; that is, eutherian is a word with a broader meaning than digitigrade mammal:

digitigrade mammal: an animal that walks so that only the toes touch the ground as e.g. dogs and cats and horses
eutherian: mammals having a placenta; all mammals except monotremes and marsupials

Other hypernyms of digitigrade mammal include eutherian mammal, placental, placental mammal.

digitigrade mammal (noun)	eutherian (noun)
an animal that walks so that only the toes touch the ground as e.g. dogs and cats and horses	mammals having a placenta; all mammals except monotremes and marsupials

digitigrade mammal (adjective)	eutherian (adjective)
	of or relating to or belonging to the subclass Eutheria