equitable vs unfair

equitable

adj
  • Marked by or having equity. 

  • Relating to the general principles of justice that correct or supplement the provisions of the law. 

  • Fair, just, or impartial. 

unfair

adj
  • not fair, unjust 

  • sorrowful; sad 

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