grounds vs quadrat

grounds

noun
  • The collective land areas that compose a larger area. 

  • The sediment at the bottom of a liquid, or from which a liquid has been filtered. 

  • Basis or justification for something. 

quadrat

noun
  • An area of land, marked for studying its plants, animals, soil, natural processes, etc. 

  • A virtual rectangular subdivision of a line or column of hieroglyphs within which a group of hieroglyphs is arranged. 

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