set off vs set out

set off and set out both are verbs.

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

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

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

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