devastate vs scourge

devastate is not a noun while scourge is a noun.

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

As verbs, devastate and scourge are synonyms defined as:

Other synonyms of devastate include desolate, lay waste to, ravage, waste.

devastate (noun)	scourge (noun)
	a whip used to inflict punishment
	a person who inspires fear or dread
	something causing misery or death

devastate (verb)	scourge (verb)
cause extensive destruction or ruin utterly	cause extensive destruction or ruin utterly
overwhelm or overpower	whip
	punish severely; excoriate