runoff vs washstand

runoff

noun
  • Dissolved chemicals, etc, included in such water. 

  • That portion of precipitation or irrigation on an area which does not infiltrate or evaporate, but instead is discharged from the area. 

  • A second or further round of an indecisive election, after other candidates (often all but the last two) have been eliminated. 

  • A second or further round of a competition, after other competitors (often all but the last two) have been eliminated. 

washstand

noun
  • A table containing a basin and a pitcher of water for washing 

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