rhino vs odd-toed ungulate

rhino and odd-toed ungulate both are nouns.

Word	Noun	Adjective	Verb	Adverb
rhino	Yes	No	No	No
odd-toed ungulate	Yes	No	No	No

As nouns, odd-toed ungulate is a hypernym of rhino; that is, odd-toed ungulate is a word with a broader meaning than rhino:

rhino: massive powerful herbivorous odd-toed ungulate of southeast Asia and Africa having very thick skin and one or two horns on the snout
odd-toed ungulate: placental mammals having hooves with an odd number of toes on each foot

Other hypernyms of rhino include perissodactyl, perissodactyl mammal.

rhino (noun)	odd-toed ungulate (noun)
massive powerful herbivorous odd-toed ungulate of southeast Asia and Africa having very thick skin and one or two horns on the snout	placental mammals having hooves with an odd number of toes on each foot