affirmation vs nix

affirmation

noun
  • A form of self-forced meditation or repetition; autosuggestion. 

  • That which is affirmed; a declaration that something is true. 

  • The solemn declaration made by Quakers and others incapable of taking an oath. 

nix

verb
  • To make something become nothing; to reject or cancel. 

  • To destroy or eradicate. 

noun
  • Nothing. 

  • A treacherous water-spirit; a nixie. 

intj
  • No! Not at all! 

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