lagomorph vs eutherian

lagomorph and eutherian both are nouns.

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

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

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

lagomorph (noun)	eutherian (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)	eutherian (adjective)
	of or relating to or belonging to the subclass Eutheria