greyness vs hoar

greyness

noun

  • The state or quality of being grey. 

hoar

noun

  • A white or greyish-white colour. 

  • Hoariness; antiquity. 

adj

  • Hoarily bearded. 

  • Of a white or greyish-white colour. 

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