nap vs turn in

nap

verb
  • To be off one's guard. 

  • To have a nap; to sleep for a short period of time, especially during the day. 

  • To form or raise a soft or fuzzy surface on (fabric or leather). 

  • To cover (something) with a sauce. (usually in the passive) 

noun
  • A card game in which players take tricks; properly Napoleon. 

  • A soft or fuzzy surface, generally on fabric or leather. 

  • A cup, bowl. 

  • A bid to take five tricks in the card game Napoleon. 

  • The common direction, on some kinds of fabric, of the hairs making up the pile. 

  • A short period of sleep, especially one during the day. 

  • A type of bet in British horse racing, based on the experts' best tips. 

turn in

verb
  • To relinquish; give up; to tell on someone to the authorities (especially to turn someone in). 

  • To convert a goal using a turning motion of the body. 

  • To submit something; to give. 

  • To go to bed; to retire to bed. 

  • To reverse the ends of threads and insert them back into the piece being woven so they do not protrude and eventually unravel. 

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