demonstrate vs sleep in

demonstrate

verb
  • to show how to use (something). 

  • to show, display, or present; to prove or make evident 

  • to show the steps taken to create a logical argument or equation. 

  • to participate in or organize a demonstration. 

sleep in

verb
  • Used other than figuratively or idiomatically: see sleep, in. 

  • To sleep late; to go on sleeping past one's customary or planned hour. 

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