Noun end of the world has 2 senses

• end of the world(n = noun.time) crack of doom, day of judgement, day of judgment, day of reckoning, doomsday, eschaton, judgement day, judgment day, last day, last judgement, last judgment - (New Testament) day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives; Array
is a kind of day

• end of the world(n = noun.event) day of reckoning, doom, doomsday - an unpleasant or disastrous destiny; "everyone was aware of the approaching doom but was helpless to avoid it"; "that's unfortunate but it isn't the end of the world"
is a kind of destiny, fate