multiracial vs polychrome

multiracial

adj
  • Composed of, or having a mixture of, multiple races. 

noun
  • An individual of more than one race. 

polychrome

adj
  • Using multiple colours 

  • Executed in the manner of polychromy 

noun
  • A piece of multicolored pottery. 

  • esculin (so called in allusion to its fluorescent solutions) 

verb
  • To divide (a dye etc.) into multiple colours. 

  • To paint or dye with multiple colours. 

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