debar vs disqualify

debar

verb
  • To prohibit (a person or company that has been convicted of criminal acts in connection with a government program) from future participation in that program. 

  • To exclude or shut out; to bar. 

  • To hinder or prevent. 

disqualify

verb
  • To make ineligible for something. 

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

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