insectivore vs placental mammal

insectivore and placental mammal both are nouns.

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

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

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

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

insectivore (noun)	placental 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