lash vs urticate

lash is a noun but urticate is not a noun.

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

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

lash (noun)	urticate (noun)
a quick blow delivered with a whip or whiplike object
leather strip that forms the flexible part of a whip
any of the short curved hairs that grow from the edges of the eyelids

lash (verb)	urticate (verb)
strike as if by whipping	sting with or as with nettles and cause a stinging pain or sensation
beat severely with a whip or rod	whip with or as with nettles
bind with a rope, chain, or cord
lash or flick about sharply