grey vs hoar

grey

adj
  • Synonym of coloured (pertaining to the mixed race of black and white). 

  • UK and Commonwealth standard spelling of gray. 

verb
  • UK and Commonwealth standard spelling of gray. 

noun
  • UK and Commonwealth standard spelling of gray. 

hoar

adj
  • Of a white or greyish-white colour. 

  • Hoarily bearded. 

noun
  • A white or greyish-white colour. 

  • Hoariness; antiquity. 

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