dumbfound vs fox

dumbfound is not a noun while fox is a noun.

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

As verbs, fox is a hypernym of dumbfound; that is, fox is a word with a broader meaning than dumbfound:

Other hypernyms of dumbfound include bedevil, befuddle, confound, confuse, discombobulate, fuddle, throw.

dumbfound (noun)	fox (noun)
	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

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