harm vs meatgrinder

harm

noun
  • That which causes injury, damage, or loss. 

  • detriment; misfortune. 

  • physical injury; hurt; damage 

  • emotional or figurative hurt 

verb
  • To cause injury to another; to hurt; to cause damage to something. 

meatgrinder

noun
  • A process that is likely to be injurious in a non-physical way. 

  • A device for cutting meat into very small pieces. 

  • An activity with a high casualty or attrition rate, such as a military battle or an occupational or athletic activity. 

  • The mountainous second day of the race was a real meatgrinder, with 20% of racers dropping out. 

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