botcher vs fumbler

botcher and fumbler both are nouns.

Word	Noun	Adjective	Verb	Adverb
botcher	Yes	No	No	No
fumbler	Yes	No	No	No

As nouns, botcher and fumbler are synonyms defined as:

Other synonyms of botcher include blunderer, bumbler, bungler, butcher, fuckup, sad sack, stumbler.

botcher (noun)	fumbler (noun)
someone who makes mistakes because of incompetence	someone who makes mistakes because of incompetence