end of the world vs expiry

end of the world

noun
  • Death and destruction of life on Earth, especially human. 

  • Destruction of Earth. 

  • Any change that seems catastrophic or devastating. 

expiry

noun
  • Death. 

  • Synonym of expiration date 

  • End; termination; expiration. 

How often have the words end of the world and expiry occurred in a corpus of books? (source: Google Ngram Viewer )