even-toed ungulate vs artiodactyl mammal

even-toed ungulate and artiodactyl mammal both are nouns.

Word	Noun	Adjective	Verb	Adverb
even-toed ungulate	Yes	No	No	No
artiodactyl mammal	Yes	No	No	No

As nouns, even-toed ungulate and artiodactyl mammal are synonyms defined as:

even-toed ungulate and artiodactyl mammal: placental mammal having hooves with an even number of functional toes on each foot

Other synonyms of even-toed ungulate include artiodactyl.

even-toed ungulate (noun)	artiodactyl mammal (noun)
placental mammal having hooves with an even number of functional toes on each foot	placental mammal having hooves with an even number of functional toes on each foot