whip vs lash

whip and lash both are nouns.

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

As nouns, whip and lash are synonyms defined as:

Other synonyms of whip include whiplash.

As verbs, whip and lash are synonyms defined as:

Other synonyms of whip include flog, lather, slash, strap, trounce, welt.

As verbs, whip and lash are synonyms defined as:

whip (noun)	lash (noun)
a quick blow delivered with a whip or whiplike object	a quick blow delivered with a whip or whiplike object
an instrument with a handle and a flexible lash that is used for whipping	leather strip that forms the flexible part of a whip
(golf) the flexibility of the shaft of a golf club	any of the short curved hairs that grow from the edges of the eyelids
a dessert made of sugar and stiffly beaten egg whites or cream and usually flavored with fruit
a legislator appointed by the party to enforce discipline

whip (verb)	lash (verb)
subject to harsh criticism	strike as if by whipping
defeat thoroughly	beat severely with a whip or rod
beat severely with a whip or rod	bind with a rope, chain, or cord
whip with or as if with a wire whisk	lash or flick about sharply
strike as if by whipping
thrash about flexibly in the manner of a whiplash