artiodactyl mammal vs even-toed ungulate

artiodactyl mammal and even-toed ungulate both are nouns.

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

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

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

Other synonyms of artiodactyl mammal include artiodactyl.

artiodactyl mammal (noun)	even-toed ungulate (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