polychromatic vs variegated

polychromatic

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

  • Composed of more than one wavelength. 

variegated

adj
  • Streaked, spotted, or otherwise marked with a variety of color. 

  • Very colorful. 

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