put off vs set back

put off and set back both are verbs.

Word	Noun	Adjective	Verb	Adverb
put off	No	No	Yes	No
set back	No	No	Yes	No

As verbs, put off and set back are synonyms defined as:

Other synonyms of put off include defer, hold over, postpone, prorogue, put over, remit, shelve, table.

put off (verb)	set back (verb)
avoid or try to avoid fulfilling, answering, or performing (duties, questions, or issues)	slow down the progress of; hinder
take away the enthusiasm of	cost a certain amount
cause to feel embarrassment	hold back to a later time
cause to feel intense dislike or distaste
hold back to a later time