set off vs cancel

set off is not a noun while cancel is a noun.

Word	Noun	Adjective	Verb	Adverb
set off	No	No	Yes	No
cancel	Yes	No	Yes	No

As verbs, set off and cancel are synonyms defined as:

Other synonyms of set off include offset.

set off (noun)	cancel (noun)
	a notation cancelling a previous sharp or flat

set off (verb)	cancel (verb)
cause to burst with a violent release of energy	make invalid for use
set in motion or cause to begin	remove or make invisible
direct attention to, as if by means of contrast	declare null and void; make ineffective
provoke or stir up	postpone indefinitely or annul something that was scheduled
put in motion or move to act	make up for
depart for someplace
make up for