artiodactyl mammal vs Artiodactyla

artiodactyl mammal and Artiodactyla both are nouns.

Word	Noun	Adjective	Verb	Adverb
artiodactyl mammal	Yes	No	No	No
Artiodactyla	Yes	No	No	No

artiodactyl mammal (noun)	Artiodactyla (noun)
placental mammal having hooves with an even number of functional toes on each foot	an order of hooved mammals of the subclass Eutheria (including pigs and peccaries and hippopotami and members of the suborder Ruminantia) having an even number of functional toes