lash vs scourge

lash and scourge both are nouns.

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

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

Other hyponyms of lash include flagellate, leather, horsewhip, switch, cowhide, cat, birch.

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

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