burnt sienna vs cocoa

burnt sienna

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

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

cocoa

adj
  • Of a light to medium brown colour, like that of cocoa powder. 

noun
  • The dried and partially fermented fatty seeds of the cacao tree from which chocolate is made. 

  • A serving of this drink. 

  • An unsweetened brown powder made from roasted, ground cocoa beans, used in making chocolate, and in cooking. 

  • A hot drink made with milk, cocoa powder, and sugar. 

  • A light to medium brown colour. 

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