Fissipedia vs eutherian mammal

Fissipedia and eutherian mammal both are nouns.

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

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

Fissipedia: in some classifications considered a suborder of Carnivora
eutherian mammal: mammals having a placenta; all mammals except monotremes and marsupials

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

Fissipedia (noun)	eutherian mammal (noun)
in some classifications considered a suborder of Carnivora	mammals having a placenta; all mammals except monotremes and marsupials