stagger vs stumble

stagger and stumble both are nouns.

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

As nouns, stagger and stumble are synonyms defined as:

Other synonyms of stagger include lurch.

stagger (noun)	stumble (noun)
an unsteady uneven gait	an unsteady uneven gait
	an unintentional but embarrassing blunder

stagger (verb)	stumble (verb)
to arrange in a systematic order	make an error
astound or overwhelm, as with shock	miss a step and fall or nearly fall
walk as if unable to control one's movements	walk unsteadily, tripping repeatedly
walk with great difficulty	encounter by chance