fratricide vs liquidation

fratricide

noun
  • The intentional or unintentional killing of a comrade in arms. 

  • A person who commits fratricide. 

  • The killing of one's brother (or sister). 

  • The undesirable situation where the separate missiles from a MIRV interfere with each other as they explode. 

liquidation

noun
  • Murder of dehumanized victims. 

  • 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. 

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