till vs windrow

till

noun
  • manure or other material used to fertilize land 

  • A vetch; a tare. 

  • A cash register. 

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

  • 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. 

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

  • To cultivate soil. 

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

conj
  • Until, until the time that. 

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

  • To make it possible that. 

windrow

noun
  • A row of cut grain or hay allowed to dry in a field. 

  • The green border of a field, dug up in order to carry the earth onto other land to improve it. 

  • A line of snow left behind by the edge of a snowplow’s blade. 

  • A ridge or berm at a perimeter 

  • A long snowbank along the side of a road. 

  • A line of leaves etc heaped up by the wind. 

  • A similar streak of seaweed etc on the surface of the sea formed by Langmuir circulation. 

  • A line of gravel left behind by the edge of a grader’s blade. 

verb
  • To arrange (e.g. new-made hay) in lines or windrows. 

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