father-slayer vs liquidation

father-slayer

noun
  • One who kills or murders one's father; a patricide 

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 father-slayer and liquidation occurred in a corpus of books? (source: Google Ngram Viewer )