carnivore vs eutherian

carnivore and eutherian both are nouns.

Word	Noun	Adjective	Verb	Adverb
carnivore	Yes	No	No	No
eutherian	Yes	Yes	No	No

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

carnivore: a terrestrial or aquatic flesh-eating mammal
eutherian: mammals having a placenta; all mammals except monotremes and marsupials

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

carnivore (noun)	eutherian (noun)
a terrestrial or aquatic flesh-eating mammal	mammals having a placenta; all mammals except monotremes and marsupials
any animal that feeds on flesh

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