Probably a mis-spelling of "Apocalypse".
The world will end eventully but not yet the film 2012 id not true a apocolapse will ocore in the next 3-5 million years,
a funny comparing and contrasting essay you could write about is "can my goldfish drown?" (wich is possible) "could there ever be a zombie apocolapse?" (wich is also possible)
Well, no one really knows when its happening. I doubt that there is ever going to be one, but i wish cause zombies are cool. It usually happens by one zombie that came back to life and bit someone. Until that one bites another until there is a lot of them.