sand vs swale

sand

noun
  • A beach or other expanse of sand. 

  • A moment or interval of time; the term or extent of one's life (referring to the sand in an hourglass). 

  • "sand in [someone's] eyes" (idiom) 

  • Rock that is ground more finely than gravel, but is not as fine as silt (more formally, see grain sizes chart), forming beaches and deserts and also used in construction. 

  • A sandpiper. 

  • A particle from 62.5 microns to 2 mm in diameter, following the Wentworth scale. 

  • A light beige colour, like that of typical sand. 

adj
  • Of a light beige colour, like that of typical sand. 

verb
  • To abrade the surface of (something) with sand or sandpaper in order to smooth or clean it. 

  • To blot ink using sand. 

  • To cover with sand. 

swale

noun
  • 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 low tract of moist or marshy land. 

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

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