placental mammal vs placental

placental mammal and placental both are nouns.

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

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

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

Other synonyms of placental mammal include eutherian, eutherian mammal.

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

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