insectivore vs eutherian mammal

insectivore and eutherian mammal both are nouns.

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

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

insectivore: small insect-eating mainly nocturnal terrestrial or fossorial mammals
eutherian mammal: mammals having a placenta; all mammals except monotremes and marsupials

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

insectivore (noun)	eutherian mammal (noun)
small insect-eating mainly nocturnal terrestrial or fossorial mammals	mammals having a placenta; all mammals except monotremes and marsupials
any organism that feeds mainly on insects