ploy vs pretext

ploy

noun
  • A tactic, strategy, or scheme. 

  • Sport; frolic. 

verb
  • To form a column from a line of troops on some designated subdivision. 

pretext

noun
  • A false, contrived, or assumed purpose or reason; a pretense. 

verb
  • To employ a pretext, which involves using a false or contrived purpose for soliciting the gain of something else. 

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