fumble vs foul-up

fumble and foul-up both are nouns.

Word	Noun	Adjective	Verb	Adverb
fumble	Yes	No	Yes	No
foul-up	Yes	No	No	No

As nouns, foul-up is a hypernym of fumble; that is, foul-up is a word with a broader meaning than fumble:

Other hypernyms of fumble include bloomer, blooper, blunder, boner, boo-boo, botch, bungle, flub, fuckup, pratfall.

fumble (noun)	foul-up (noun)
(sports) dropping the ball	an embarrassing mistake

fumble (verb)	foul-up (verb)
drop or juggle or fail to play cleanly a grounder
feel about uncertainly or blindly
handle clumsily
make one's way clumsily or blindly
make a mess of, destroy or ruin