grief vs penance

grief

noun
  • Suffering, hardship. 

  • Emotional pain, generally arising from misfortune, significant personal loss, bereavement, misconduct of oneself or others, etc.; sorrow; sadness. 

  • Cause or instance of sorrow or pain; that which afflicts or distresses; trial. 

verb
  • To deliberately harass and annoy or cause grief to other players of a game in order to interfere with their enjoyment of it; especially, to do this as one’s primary activity in the game. 

penance

noun
  • Any instrument of self-punishment. 

  • A voluntary self-imposed punishment for a sinful act or wrongdoing. It may be intended to serve as reparation for the act. 

  • A sacrament in some Christian churches. 

verb
  • To impose penance; to punish. 

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