perissodactyl vs rhino

perissodactyl and rhino both are nouns.

Word	Noun	Adjective	Verb	Adverb
perissodactyl	Yes	No	No	No
rhino	Yes	No	No	No

As nouns, rhino is a hyponym of perissodactyl; that is, rhino is a word with a more specific, narrower meaning than perissodactyl:

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

Other hyponyms of perissodactyl include equid, equine, rhinoceros, tapir.

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