scourge vs lash

scourge and lash both are nouns.

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

As verbs, lash is a hypernym of scourge; that is, lash is a word with a broader meaning than scourge:

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

scourge (noun)	lash (noun)
a whip used to inflict punishment	a quick blow delivered with a whip or whiplike object
a person who inspires fear or dread	leather strip that forms the flexible part of a whip
something causing misery or death	any of the short curved hairs that grow from the edges of the eyelids

scourge (verb)	lash (verb)
cause extensive destruction or ruin utterly	strike as if by whipping
whip	beat severely with a whip or rod
punish severely; excoriate	bind with a rope, chain, or cord
	lash or flick about sharply