harm vs mistreat

harm

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

noun
  • detriment; misfortune. 

  • physical injury; hurt; damage 

  • That which causes injury, damage, or loss. 

  • emotional or figurative hurt 

mistreat

verb
  • To treat someone, or something roughly or badly. 

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