palpebra vs lash

palpebra and lash both are nouns.

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

palpebra (noun)	lash (noun)
either of two folds of skin that can be moved to cover or open the eye	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

palpebra (verb)	lash (verb)
	strike as if by whipping
	beat severely with a whip or rod
	bind with a rope, chain, or cord
	lash or flick about sharply