mercilessness vs sympathy

mercilessness

noun
  • The property of being merciless. 

sympathy

noun
  • Support in the form of shared feelings or opinions. 

  • Artistic harmony, as of shape or colour in a painting. 

  • The formal expression of pity or sorrow for someone else's misfortune. 

  • The ability to share the feelings of another. 

  • A feeling of pity or sorrow for the suffering or distress of another. 

  • Mutual or parallel susceptibility or a condition brought about by it. 

  • An affinity, association or mutual relationship between people or things such that they are correspondingly affected by any condition. 

  • Feeling of loyalty; tendency towards, agreement with or approval of an opinion or aim; a favorable attitude. 

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