old-age pensioner vs oldie

old-age pensioner

noun
  • A person in receipt of an old age pension, a senior citizen. 

oldie

noun
  • Something or someone old. 

  • The genre of music composed of popular music from previous eras. 

  • A song or record from a previous era. 

How often have the words old-age pensioner and oldie occurred in a corpus of books? (source: Google Ngram Viewer )