dragnet vs landing net

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. 

landing net

noun
  • A fishnet mounted on a ring which is connected to a handle, used by anglers to secure a catch when pulling it out of the water by the line to which it is hooked. 

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