flog vs lash

flog is not a noun while lash is a noun.

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

As verbs, flog and lash are synonyms defined as:

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

flog (noun)	lash (noun)
	a quick blow delivered with a whip or whiplike object
	leather strip that forms the flexible part of a whip
	any of the short curved hairs that grow from the edges of the eyelids

flog (verb)	lash (verb)
beat severely with a whip or rod	strike as if by whipping
beat with a cane	beat severely with a whip or rod
	bind with a rope, chain, or cord
	lash or flick about sharply