flash back vs cut back

flash back and cut back both are verbs.

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

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

flash back (verb)	cut back (verb)
return in time	place restrictions on
	cut down on; make a reduction in
	cultivate, tend, and cut back the growth of
	return in time