heterochromatic vs pied

heterochromatic

adj
  • Having more than one colour; relating to heterochromia. 

  • Of light, having more than one wavelength. 

  • Of or relating to heterochromatin. 

pied

adj
  • Having two or more colors, especially black and white. 

  • Decorated or colored in blotches. 

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