geriatric vs pensionary

geriatric

adj
  • Relating to geriatrics. 

  • Relating to the elderly. 

  • Elderly, old. 

noun
  • An old person. 

pensionary

adj
  • pertaining to a pension 

  • maintained by a pension; receiving a pension 

noun
  • A leading functionary and legal adviser of the principal town corporations in the Netherlands. 

  • one who receives a pension; a pensioner 

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