regrade vs resort

regrade

verb
  • To regroup or reassign. 

  • To change the classification of (potentially secret documentation). 

  • To grade again, give a new grade or grading to. 

noun
  • The act or process of grading again. 

resort

verb
  • To fall back; to revert. 

  • To repeat a sorting process; sort again. 

  • To have recourse (to), now especially from necessity or frustration. 

  • To make one's way, go (to). 

noun
  • A place where people go for recreation, especially one with facilities such as lodgings, entertainment, and a relaxing environment. 

  • Recourse, refuge (something or someone turned to for safety). 

  • An act of sorting again. 

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