bed down vs turn in

bed down

verb
  • To lie down to sleep for the night, usually of livestock or machinery. 

  • To put an animal to rest for the night. 

turn in

verb
  • To go to bed; to retire to bed. 

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

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

  • To submit something; to give. 

  • 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 bed down and turn in occurred in a corpus of books? (source: Google Ngram Viewer )