quagga vs equine

quagga and equine both are nouns.

Word	Noun	Adjective	Verb	Adverb
quagga	Yes	No	No	No
equine	Yes	Yes	No	No

As nouns, equine is a hypernym of quagga; that is, equine is a word with a broader meaning than quagga:

quagga: mammal of South Africa that resembled a zebra; extinct since late 19th century
equine: hoofed mammals having slender legs and a flat coat with a narrow mane along the back of the neck

Other hypernyms of quagga include equid.

quagga (noun)	equine (noun)
mammal of South Africa that resembled a zebra; extinct since late 19th century	hoofed mammals having slender legs and a flat coat with a narrow mane along the back of the neck

quagga (adjective)	equine (adjective)
	resembling a horse
	of or belonging to the family Equidae