fumble vs muff

fumble and muff both are nouns.

Word	Noun	Adjective	Verb	Adverb
fumble	Yes	No	Yes	No
muff	Yes	No	Yes	No

As nouns, fumble and muff are synonyms defined as:

As verbs, fumble and muff are synonyms defined as:

fumble (noun)	muff (noun)
(sports) dropping the ball	(sports) dropping the ball
	a warm tubular covering for the hands

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