flog vs welt

flog is not a noun while welt is a noun.

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

As verbs, flog and welt are synonyms defined as:

Other synonyms of flog include lash, lather, slash, strap, trounce, whip.

flog (noun)	welt (noun)
	a raised or strengthened seam
	a raised mark on the skin (as produced by the blow of a whip); characteristic of many allergic reactions

flog (verb)	welt (verb)
beat severely with a whip or rod	put a welt on
beat with a cane	beat severely with a whip or rod