doze vs sleep in

doze

verb
  • To sleep lightly or briefly; to nap, snooze. 

  • To bulldoze. 

  • To make dull; to stupefy. 

noun
  • A light, short sleep or nap. 

sleep in

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

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

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