dragnet vs ensnare

dragnet

verb
  • To make heightened efforts to catch a suspect. 

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

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

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

ensnare

verb
  • To entrap; to catch in a snare or trap. 

  • To entangle; to enmesh. 

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