dragnet vs mooring

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. 

mooring

noun
  • A place to moor a vessel. 

  • The act of securing a vessel with a cable or anchor etc. 

  • Something to which one adheres, or the means that helps one to maintain a stable position and keep one's identity - moral, intellectual, political, etc. 

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