auger vs stratagem

auger

noun
  • A snake or plumber's snake (plumbing tool). 

  • A hollow drill used to take core samples of soil, ice, etc. for scientific study. 

  • A tool used to bore holes in the ground, e.g. for fence posts 

  • A carpenter's tool for boring holes longer than those bored by a gimlet. 

verb
  • To use an auger; to drill a hole using an auger. 

  • To proceed in the manner of an auger. 

stratagem

noun
  • Cunning and artifice in general. 

  • Military deception or artifice. 

  • A tactic or artifice designed to gain the upper hand, especially one involving underhanded dealings or deception. 

  • Specifically, such a tactic or artifice in military operation. 

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