ashen vs hollow-cheeked

ashen

verb
  • To turn into ash; make or become ashy 

  • To make or become pale 

adj
  • Of or resembling ashes. 

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

  • Made from the wood of the ash-tree. 

hollow-cheeked

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