fumble vs miscarry

fumble is a noun but miscarry is not a noun.

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

As verbs, miscarry is a hypernym of fumble; that is, miscarry is a word with a broader meaning than fumble:

Other hypernyms of fumble include fail, go wrong.

fumble (noun)	miscarry (noun)
(sports) dropping the ball

fumble (verb)	miscarry (verb)
drop or juggle or fail to play cleanly a grounder	suffer a miscarriage
feel about uncertainly or blindly	be unsuccessful
handle clumsily
make one's way clumsily or blindly
make a mess of, destroy or ruin