eutherian vs placental mammal

eutherian and placental mammal both are nouns.

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

As nouns, eutherian and placental mammal are synonyms defined as:

eutherian and placental mammal: mammals having a placenta; all mammals except monotremes and marsupials

Other synonyms of eutherian include eutherian mammal, placental.

eutherian (noun)	placental mammal (noun)
mammals having a placenta; all mammals except monotremes and marsupials	mammals having a placenta; all mammals except monotremes and marsupials

eutherian (adjective)	placental mammal (adjective)
of or relating to or belonging to the subclass Eutheria