adjourn vs regrade

adjourn

verb
  • To move as a group from one place to another. 

  • To postpone. 

  • To defer; to put off temporarily or indefinitely. 

  • To end or suspend an event. 

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. 

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