Shoah vs liquidation

Shoah

name
  • The systematic mass murder of six million Jews perpetrated by Nazi Germany shortly before and during World War II. 

liquidation

noun
  • The act of exchange of an asset of lesser liquidity with a more liquid one, such as cash. 

  • The selling of the assets of a business as part of the process of dissolving the business. 

  • Murder of dehumanized victims. 

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