lagomorph vs placental

lagomorph and placental both are nouns.

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

As nouns, placental is a hypernym of lagomorph; that is, placental 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: mammals having a placenta; all mammals except monotremes and marsupials

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

lagomorph (noun)	placental (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

lagomorph (adjective)	placental (adjective)
	pertaining to or having or occurring by means of a placenta