ashen vs khaki

ashen

adj
  • Ash-colored; pale; anemic, anaemic; appalled. 

  • Of or resembling ashes. 

  • Made from the wood of the ash-tree. 

verb
  • To turn into ash; make or become ashy 

  • To make or become pale 

khaki

adj
  • Dust-coloured; of the colour of dust. 

noun
  • khaki (Pantone) 

  • A British person (from the colour of the uniform of British troops, originally in the Second Boer War; compare rooinek). (In this sense the plural generally is khakies.) 

  • khaki green 

  • A soldier wearing a khaki uniform. 

  • Khaki clothing or uniform. 

  • Khaki green, a dull green colour. 

  • A strong cloth of wool or cotton, often used for military or other uniforms. 

  • A dull, yellowish-brown colour, the colour of dust. 

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