battue vs ethnic cleansing

battue

noun
  • A form of hunting in which game is forced into the open by the beating of sticks on bushes, etc. 

  • A hunt performed in this manner. 

ethnic cleansing

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

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