downgrade vs windrow

downgrade

noun
  • A downhill gradient on a road or railway. 

  • A reduction of a rating, as a financial or credit rating. 

verb
  • to reduce the official estimate of a storm's intensity. 

  • To reduce in complexity, or remove unnecessary parts; to dumb down. 

  • To place lower in position. 

  • To revert software back to an older version. 

  • To disparage. 

windrow

noun
  • A long snowbank along the side of a road. 

  • 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 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. 

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

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

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