fall out vs set off

fall out and set off both are verbs.

Word	Noun	Adjective	Verb	Adverb
fall out	No	No	Yes	No
set off	No	No	Yes	No

fall out (verb)	set off (verb)
come to pass	cause to burst with a violent release of energy
have a breach in relations	set in motion or cause to begin
drop out	direct attention to, as if by means of contrast
leave (a barracks) in order to take a place in a military formation, or leave a military formation	provoke or stir up
come as a logical consequence; follow logically	put in motion or move to act
	depart for someplace
	make up for