slash vs thresh

slash is a noun but thresh is not a noun.

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

As verbs, slash and thresh are synonyms defined as:

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

slash (noun)	thresh (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

slash (verb)	thresh (verb)
cut drastically	give a thrashing to; beat hard
cut open	beat the seeds out of a grain
cut with sweeping strokes; as with an ax or machete	move or stir about violently
beat severely with a whip or rod	move like a flail; thresh about
move or stir about violently