brutality vs cold-bloodedness

brutality

noun
  • The state of being brutal. 

  • A cruel or savage act. 

  • The use of excessive physical force, often in the form of violence. 

cold-bloodedness

noun
  • the state of being cold-blooded 

How often have the words brutality and cold-bloodedness occurred in a corpus of books? (source: Google Ngram Viewer )