quagga vs equid

quagga and equid both are nouns.

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

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

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

Other hypernyms of quagga include equine.

quagga (noun)	equid (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