carnivore vs eutherian mammal

carnivore and eutherian mammal both are nouns.

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

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

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

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

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