harm vs vitiate

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 

vitiate

verb
  • To debase or morally corrupt. 

  • To make something ineffective, to invalidate. 

  • To spoil, make faulty; to reduce the value, quality, or effectiveness of something. 

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