stumble vs falter

stumble and falter both are nouns.

Word	Noun	Adjective	Verb	Adverb
stumble	Yes	No	Yes	No
falter	Yes	No	Yes	No

As verbs, stumble and falter are synonyms defined as:

Other synonyms of stumble include bumble.

stumble (noun)	falter (noun)
an unsteady uneven gait	the act of pausing uncertainly
an unintentional but embarrassing blunder

stumble (verb)	falter (verb)
make an error	speak haltingly
miss a step and fall or nearly fall	walk unsteadily, tripping repeatedly
walk unsteadily, tripping repeatedly	move hesitatingly, as if about to give way
encounter by chance	be unsure or weak