clear-out vs secretion

clear-out

noun
  • The act of emptying a room or space. 

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

secretion

noun
  • the act of hiding something 

  • any substance that is secreted by an organism 

  • the act of secreting a substance, especially from a gland 

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