disqualify vs mar

disqualify

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

  • To make ineligible for something. 

mar

noun
  • A small lake. 

  • A blemish. 

verb
  • To spoil; to ruin; to scathe; to damage. 

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