canid vs fox

canid and fox both are nouns.

Word	Noun	Adjective	Verb	Adverb
canid	Yes	No	No	No
fox	Yes	No	Yes	No

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

canid: any of various fissiped mammals with nonretractile claws and typically long muzzles
fox: alert carnivorous mammal with pointed muzzle and ears and a bushy tail; most are predators that do not hunt in packs

Other hyponyms of canid include bitch, Canis familiaris, dog, domestic dog, wolf, jackal, wild dog, hyaena, hyena.

canid (noun)	fox (noun)
any of various fissiped mammals with nonretractile claws and typically long muzzles	alert carnivorous mammal with pointed muzzle and ears and a bushy tail; most are predators that do not hunt in packs
	a shifty deceptive person
	the grey or reddish-brown fur of a fox

canid (verb)	fox (verb)
	become discolored with, or as if with, mildew spots
	be confusing or perplexing to; cause to be unable to think clearly
	deceive somebody