remorselessness vs savagery

remorselessness

noun
  • the characteristic of lacking remorse 

savagery

noun
  • Savage or brutal behaviour; barbarity. 

  • Wild growth of plants. 

  • A violent act of cruelty. 

  • Savages collectively; the world of savages. 

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