swale vs windrow

swale

noun
  • A low tract of moist or marshy land. 

  • A long narrow and shallow trough between ridges on a beach, running parallel to the coastline. 

  • Bioswale, a shallow trough dug into the land on contour (horizontally with no slope), whose purpose is to allow water time to percolate into the soil. 

  • A shallow, usually grassy depression sloping downward from a plains upland meadow or level vegetated ridgetop. 

  • A gutter in a candle. 

  • A shallow troughlike depression that's created to carry water during rainstorms or snow melts; a drainage ditch. 

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 swale and windrow occurred in a corpus of books? (source: Google Ngram Viewer )