equid vs hinny

equid and hinny both are nouns.

Word	Noun	Adjective	Verb	Adverb
equid	Yes	No	No	No
hinny	Yes	No	No	No

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

equid: hoofed mammals having slender legs and a flat coat with a narrow mane along the back of the neck
hinny: hybrid offspring of a male horse and a female donkey or ass; usually sterile

Other hyponyms of equid include Equus caballus, horse, ass, mule, zebra, Equus quagga, quagga.

equid (noun)	hinny (noun)
hoofed mammals having slender legs and a flat coat with a narrow mane along the back of the neck	hybrid offspring of a male horse and a female donkey or ass; usually sterile