old-age pensioner vs twirly

old-age pensioner

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

twirly

noun
  • an old age pensioner or other elderly person, especially one using public transport. 

adj
  • coiled or curly 

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