livestock vs eutherian mammal

livestock and eutherian mammal both are nouns.

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

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

livestock: any animals kept for use or profit
eutherian mammal: mammals having a placenta; all mammals except monotremes and marsupials

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

livestock (noun)	eutherian mammal (noun)
any animals kept for use or profit	mammals having a placenta; all mammals except monotremes and marsupials