welt vs scourge

welt and scourge both are nouns.

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

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

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

welt (noun)	scourge (noun)
a raised or strengthened seam	a whip used to inflict punishment
a raised mark on the skin (as produced by the blow of a whip); characteristic of many allergic reactions	a person who inspires fear or dread
	something causing misery or death

welt (verb)	scourge (verb)
put a welt on	cause extensive destruction or ruin utterly
beat severely with a whip or rod	whip
	punish severely; excoriate