clear-out vs expunction

clear-out

noun
  • The act of emptying a room or space. 

  • A semicircular sweep with the ball grasped firmly in both hands. 

expunction

noun
  • The act of expunging or erasing. 

  • The condition of being expunged. 

How often have the words clear-out and expunction occurred in a corpus of books? (source: Google Ngram Viewer )