drub vs mall

drub

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

  • To defeat someone soundly; to annihilate or crush. 

  • To forcefully teach something. 

  • To criticize harshly; to excoriate. 

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

mall

verb
  • to beat with a mall, or mallet; to beat with something heavy; to bruise 

  • to build up with the development of shopping malls 

  • to shop at the mall 

noun
  • A heavy wooden mallet or hammer used in the game of pall mall. 

  • A pedestrianised street, especially a shopping precinct. 

  • A public walk; a level shaded walk, a promenade. 

  • An enclosed shopping centre. 

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