flog vs scourge

flog is not a noun while scourge is a noun.

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

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

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

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

flog (verb)	scourge (verb)
beat severely with a whip or rod	cause extensive destruction or ruin utterly
beat with a cane	whip
	punish severely; excoriate