oldster vs pensionary

oldster

noun
  • Someone who is old. 

  • A midshipman of four years' standing; a master's mate. 

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 

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