cut back vs slash

cut back is not a noun while slash is a noun.

Word	Noun	Adjective	Verb	Adverb
cut back	No	No	Yes	No
slash	Yes	No	Yes	No

As verbs, slash is a hyponym of cut back; that is, slash is a word with a more specific, narrower meaning than cut back:

cut back (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

cut back (verb)	slash (verb)
place restrictions on	cut drastically
cut down on; make a reduction in	cut open
cultivate, tend, and cut back the growth of	cut with sweeping strokes; as with an ax or machete
return in time	beat severely with a whip or rod
	move or stir about violently