barbarity vs severity

barbarity

noun

  • The state of being barbarous; brutality 

  • A crude act 

  • crudity 

  • A barbaric act 

severity

noun

  • The state of being severe. 

  • The degree of something undesirable; badness or seriousness. 

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