brindled vs burnt sienna

brindled

adj
  • of a brownish, tawny or gray colour, with streaks or spots; streaky, spotted 

burnt sienna

adj
  • Of a dark reddish brown colour, like that of roasted sienna. 

noun
  • dark reddish brown colour, like that of roasted sienna. 

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