fur vs fox

fur and fox both are nouns.

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

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

fur (noun)	fox (noun)
dense coat of fine silky hairs on mammals (e.g., cat or seal or weasel)	alert carnivorous mammal with pointed muzzle and ears and a bushy tail; most are predators that do not hunt in packs
a garment made of animal pelts or synthetic fur	a shifty deceptive person
the dressed hairy coat of a mammal	the grey or reddish-brown fur of a fox

fur (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