gait vs stumble

gait and stumble both are nouns.

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

As nouns, stumble is a hyponym of gait; that is, stumble is a word with a more specific, narrower meaning than gait:

gait (noun)	stumble (noun)
a person's manner of walking	an unsteady uneven gait
a horse's manner of moving	an unintentional but embarrassing blunder
the rate of moving (especially walking or running)

gait (verb)	stumble (verb)
	make an error
	miss a step and fall or nearly fall
	walk unsteadily, tripping repeatedly
	encounter by chance