set back vs prorogue

set back and prorogue both are verbs.

Word	Noun	Adjective	Verb	Adverb
set back	No	No	Yes	No
prorogue	No	No	Yes	No

As verbs, set back and prorogue are synonyms defined as:

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

set back (verb)	prorogue (verb)
slow down the progress of; hinder	adjourn by royal prerogative; without dissolving the legislative body
cost a certain amount	hold back to a later time
hold back to a later time