whelm vs stagger

whelm is not a noun while stagger is a noun.

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

As verbs, stagger is a hyponym of whelm; that is, stagger is a word with a more specific, narrower meaning than whelm:

Other hyponyms of whelm include devastate, clutch, get hold of, seize, kill, benight, knock out, lock.

whelm (noun)	stagger (noun)
	an unsteady uneven gait

whelm (verb)	stagger (verb)
overcome, as with emotions or perceptual stimuli	to arrange in a systematic order
to neither fail to meet nor exceed expectation	astound or overwhelm, as with shock
	walk as if unable to control one's movements
	walk with great difficulty