cut back vs snip

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

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

As verbs, cut back and snip are synonyms defined as:

Other synonyms of cut back include clip, crop, dress, lop, prune, trim.

cut back (noun)	snip (noun)
	the act of clipping or snipping
	a small piece of anything (especially a piece that has been snipped off)

cut back (verb)	snip (verb)
place restrictions on	cultivate, tend, and cut back the growth of
cut down on; make a reduction in	sever or remove by pinching or snipping
cultivate, tend, and cut back the growth of
return in time