gray-headed vs hoar

gray-headed

adj

  • Having gray hair, especially from age 

hoar

adj

  • Hoarily bearded. 

  • Of a white or greyish-white colour. 

noun

  • A white or greyish-white colour. 

  • Hoariness; antiquity. 

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