motley vs polychromic

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. 

polychromic

adj
  • Polychromatic; many-coloured. 

  • Pertaining to, or designating, any one of several acids (known only in their salts) which contain more than one atom of chromium. 

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