dappled vs polychromatic

dappled

adj
  • Having a mottled or spotted skin or coat, dapple. 

polychromatic

adj
  • Showing a variety, or a change, of colours; having many colours; multicoloured. 

  • Composed of more than one wavelength. 

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