thresh about vs slash

thresh about is not a noun while slash is a noun.

Word	Noun	Adjective	Verb	Adverb
thresh about	No	No	Yes	No
slash	Yes	No	Yes	No

As verbs, thresh about and slash are synonyms defined as:

Other synonyms of thresh about include convulse, jactitate, thrash, thrash about, thresh, toss.

thresh about (noun)	slash (noun)
	a strong sweeping cut made with a sharp instrument
	a punctuation mark (/) used to separate related items of information
	an open tract of land in a forest that is strewn with debris from logging (or fire or wind)
	a wound made by cutting

thresh about (verb)	slash (verb)
move or stir about violently	cut drastically
	cut open
	cut with sweeping strokes; as with an ax or machete
	beat severely with a whip or rod
	move or stir about violently