primate vs eutherian mammal

primate and eutherian mammal both are nouns.

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

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

primate: any placental mammal of the order Primates; has good eyesight and flexible hands and feet
eutherian mammal: mammals having a placenta; all mammals except monotremes and marsupials

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

primate (noun)	eutherian mammal (noun)
any placental mammal of the order Primates; has good eyesight and flexible hands and feet	mammals having a placenta; all mammals except monotremes and marsupials
a senior clergyman and dignitary