countermeasure vs elixir vitae

countermeasure

noun
  • Any of the devices and techniques used to impair the operational effectiveness of an enemy. 

  • Any action taken to counteract or correct another. 

elixir vitae

noun
  • elixir of life 

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