equine vs equid

equine and equid both are nouns.

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

As nouns, equine and equid are synonyms defined as:

equine and equid: hoofed mammals having slender legs and a flat coat with a narrow mane along the back of the neck

equine (noun)	equid (noun)
hoofed mammals having slender legs and a flat coat with a narrow mane along the back of the neck	hoofed mammals having slender legs and a flat coat with a narrow mane along the back of the neck

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