sway vs lash

sway and lash both are nouns.

Word	Noun	Adjective	Verb	Adverb
sway	Yes	No	Yes	No
lash	Yes	No	Yes	No

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

Other hyponyms of sway include waver, weave, oscillate, vibrate, brachiate.

sway (noun)	lash (noun)
pitching dangerously to one side	a quick blow delivered with a whip or whiplike object
controlling influence	leather strip that forms the flexible part of a whip
	any of the short curved hairs that grow from the edges of the eyelids

sway (verb)	lash (verb)
move back and forth or sideways	strike as if by whipping
move or walk in a swinging or swaying manner	beat severely with a whip or rod
cause to move back and forth	bind with a rope, chain, or cord
win approval or support for	lash or flick about sharply