hoar vs hoary

hoar

adj
  • Of a white or greyish-white colour. 

  • Hoarily bearded. 

noun
  • A white or greyish-white colour. 

  • Hoariness; antiquity. 

hoary

adj
  • White, whitish, or greyish-white. 

  • Old or old-fashioned; trite. 

  • Covered with short, dense, greyish white hairs. 

  • Of a pale silvery grey. 

  • White or grey with age. 

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