pied vs polychromate

pied

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

  • Decorated or colored in blotches. 

polychromate

adj
  • Composed of many colours 

noun
  • A salt or ion composed of multiple chromate groups 

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