bad news vs cataclysm

bad news

noun
  • News of unpleasant, unfortunate or sad events. 

  • An irritating, troublesome or harmful person, situation or thing. 

cataclysm

noun
  • A sudden, violent event. 

  • A sudden and violent change in the earth's crust. 

  • A great flood. 

How often have the words bad news and cataclysm occurred in a corpus of books? (source: Google Ngram Viewer )