dragnet vs stratagem

dragnet

noun
  • Heightened efforts by law-enforcement personnel to capture suspects. 

  • A net dragged across the bottom of a body of water. 

verb
  • To make heightened efforts to catch a suspect. 

  • To drag a net across the bottom of a body of water. 

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. 

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