disqualify vs nix

disqualify

verb
  • To make ineligible for something. 

  • To exclude from consideration by the explicit revocation of a previous qualification. 

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 disqualify and nix occurred in a corpus of books? (source: Google Ngram Viewer )