brutality vs wickedness

brutality

noun
  • A cruel or savage act. 

  • The state of being brutal. 

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

wickedness

noun
  • A wicked or sinful thing or act; morally bad or objectionable behaviour. 

  • The state of being wicked; evil disposition; immorality. 

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