annuity vs pocket money

annuity

noun
  • A right to receive amounts of money regularly over a certain fixed period, in perpetuity, or, especially, over the remaining life or lives of one or more beneficiaries. 

pocket money

noun
  • A small sum of money given to a child, by a parent or guardian. 

  • A small sum of cash, carried on the person, for small, daily expenses. 

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