motley vs polychromate

motley

adj
  • Having many colours; variegated. 

  • Comprising greatly varied elements, to the point of incongruity. 

noun
  • A jester's multicoloured clothes. 

  • An incongruous mixture. 

  • A jester; a fool. 

polychromate

adj
  • Composed of many colours 

noun
  • A salt or ion composed of multiple chromate groups 

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