ragging vs reward

ragging

noun
  • The act of one who rags or teases. 

  • An initiation in educational institutions (e.g. universities) usually involving harassment by upperclassmen. 

reward

verb
  • To give a reward to or for. 

  • To recompense. 

noun
  • Something of value given in return for an act. 

  • A prize promised for a certain deed or catch 

  • The result of an action, whether good or bad. 

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