aardvark vs eutherian mammal

aardvark and eutherian mammal both are nouns.

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

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

aardvark: nocturnal burrowing mammal of the grasslands of Africa that feeds on termites; sole extant representative of the order Tubulidentata
eutherian mammal: mammals having a placenta; all mammals except monotremes and marsupials

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

aardvark (noun)	eutherian mammal (noun)
nocturnal burrowing mammal of the grasslands of Africa that feeds on termites; sole extant representative of the order Tubulidentata	mammals having a placenta; all mammals except monotremes and marsupials