approve vs nix

approve

verb
  • To consider worthy (to); to be pleased (with); to accept. 

  • To officially sanction; to ratify; to confirm; to set as satisfactory. 

  • To make profit of; to convert to one's own profit — said especially of waste or common land appropriated by the lord of the manor. 

  • To regard as good; to commend; to be pleased with; to think well of. 

nix

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

  • To destroy or eradicate. 

intj
  • No! Not at all! 

noun
  • Nothing. 

  • A treacherous water-spirit; a nixie. 

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