ant bear vs eutherian mammal

ant bear and eutherian mammal both are nouns.

Word	Noun	Adjective	Verb	Adverb
ant bear	Yes	No	No	No
eutherian mammal	Yes	No	No	No

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

ant bear: nocturnal burrowing mammal of the grasslands of Africa that feeds on termites; sole extant representative of the order Tubulidentata
eutherian mammal: mammals having a placenta; all mammals except monotremes and marsupials

Other hypernyms of ant bear include eutherian, placental, placental mammal.

ant bear (noun)	eutherian mammal (noun)
nocturnal burrowing mammal of the grasslands of Africa that feeds on termites; sole extant representative of the order Tubulidentata	mammals having a placenta; all mammals except monotremes and marsupials
large shaggy-haired toothless anteater with long tongue and powerful claws; of South America