aged vs grey-haired

aged

adj
  • Old. 

  • Having the age of. 

  • Having undergone the improving effects of time; matured. 

noun
  • Old people, collectively. 

grey-haired

adj
  • old, wise, experienced. 

  • Having grey hair. 

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