mockery vs ragging

mockery

noun
  • Something so lacking in necessary qualities as to inspire ridicule; a laughing-stock. 

  • The action of mocking; ridicule, derision. 

  • Mimicry, imitation, now usually in a derogatory sense; a travesty, a ridiculous simulacrum. 

ragging

noun
  • The act of one who rags or teases. 

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

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