till vs turn over

till

verb
  • To work or cultivate or plough (soil); to prepare for growing vegetation and crops. 

  • To develop so as to improve or prepare for usage; to cultivate (said of knowledge, virtue, mind etc.). 

  • To cultivate soil. 

conj
  • Until, until the time that. 

prep
  • Until; to, up to; as late as (a given time). 

  • To make it possible that. 

noun
  • A vetch; a tare. 

  • A cash register. 

  • glacial drift consisting of a mixture of clay, sand, pebbles and boulders 

  • manure or other material used to fertilize land 

  • A removable box within a cash register containing the money. 

  • The contents of a cash register, for example at the beginning or end of the day or of a cashier's shift. 

turn over

verb
  • To produce, complete, or cycle through. 

  • To cause extensive disturbance or disruption to (a room, storage place, etc.), e.g. while searching for an item, or ransacking a property. 

  • Used other than figuratively or idiomatically: see turn, over. 

  • To generate (a certain amount of money from sales). 

  • To spin the crankshaft of an internal combustion engine using the starter or hand crank in an attempt to make it run. 

  • To mull, ponder 

  • To flip over; to rotate uppermost to bottom. 

  • To transfer. 

  • To give up control (of the ball and thus the ability to score). 

  • To relinquish; give back. 

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