dragnet vs weir

dragnet

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

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

verb
  • To make heightened efforts to catch a suspect. 

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

weir

noun
  • A fence placed across a river to catch fish. 

  • An adjustable dam placed across a river to regulate the flow of water downstream. 

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