ethnic cleansing vs havoc

ethnic cleansing

noun
  • The mass expulsion or killing of people belonging to one ethnic group by those of another. 

havoc

noun
  • Widespread devastation and destruction. 

  • Mayhem. 

intj
  • A cry in war as the signal for indiscriminate slaughter. 

verb
  • To cause havoc. 

  • To pillage. 

How often have the words ethnic cleansing and havoc occurred in a corpus of books? (source: Google Ngram Viewer )