set off vs blow up

set off and blow up both are verbs.

Word	Noun	Adjective	Verb	Adverb
set off	No	No	Yes	No
blow up	No	No	Yes	No

As verbs, set off and blow up are synonyms defined as:

Other synonyms of set off include detonate, explode.

set off (verb)	blow up (verb)
cause to burst with a violent release of energy	make large
set in motion or cause to begin	exaggerate or make bigger
direct attention to, as if by means of contrast	to swell or cause to enlarge
provoke or stir up	cause to burst with a violent release of energy
put in motion or move to act	fill with gas or air
depart for someplace	burst and release energy as through a violent chemical or physical reaction
make up for	add details to
	get very angry and fly into a rage