compassion vs unconcern

compassion

noun
  • Deep awareness of the suffering of another, coupled with the wish to relieve it. 

unconcern

noun
  • Freedom from worry or apprehensiveness; insouciance or nonchalance. 

  • Lack of interest or care; indifference or apathy. 

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