stratagem vs trickery

stratagem

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

  • Cunning and artifice in general. 

  • Military deception or artifice. 

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

trickery

noun
  • An instance of deception, underhanded behavior, dressing up, imposture, artifice, etc. 

  • The art of dressing up; imposture. 

  • Artifice; the use of one or more stratagems. 

  • Deception or underhanded behavior. 

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