dragnet vs drub

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. 

drub

verb
  • To defeat someone soundly; to annihilate or crush. 

  • To beat (someone or something) with a stick. 

  • To forcefully teach something. 

  • To criticize harshly; to excoriate. 

noun
  • Carbonaceous shale; small coal; slate, dross, or rubbish in coal. 

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