destroyer vs liquidator

destroyer

noun
  • That which destroys something. 

  • A larger warship with guided missile armament, usually intended for air defence or anti-ship roles. Often, but not always, larger than a frigate and smaller than a cruiser. 

  • A small, fast warship with light gun armament, smaller than a cruiser, but bigger than a frigate. 

liquidator

noun
  • One who liquidates. 

  • Any of the workers involved in cleaning up the Chernobyl disaster 

  • One supporting the political policy of liquidationism; a liquidationist. 

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