set out vs set off

set out and set off both are verbs.

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

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

Other synonyms of set out include depart, part, set forth, start, start out, take off.

set out (verb)	set off (verb)
take the first step or steps in carrying out an action	cause to burst with a violent release of energy
lay out orderly or logically in a line or as if in a line	set in motion or cause to begin
depart for someplace	direct attention to, as if by means of contrast
	provoke or stir up
	put in motion or move to act
	depart for someplace
	make up for