lagomorph vs placental mammal

lagomorph and placental mammal both are nouns.

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

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

lagomorph: relative large gnawing animals; distinguished from rodents by having two pairs of upper incisors specialized for gnawing
placental mammal: mammals having a placenta; all mammals except monotremes and marsupials

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

lagomorph (noun)	placental mammal (noun)
relative large gnawing animals; distinguished from rodents by having two pairs of upper incisors specialized for gnawing	mammals having a placenta; all mammals except monotremes and marsupials