pensionary vs retiree

pensionary

noun
  • one who receives a pension; a pensioner 

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

adj
  • pertaining to a pension 

  • maintained by a pension; receiving a pension 

retiree

noun
  • Someone who has retired from active working. 

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