pocket money vs upkeep

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. 

upkeep

verb
  • Do you know how to upkeep a boat? 

  • To maintain (something) or keep it in good repair. 

noun
  • Maintenance; the act or effort of keeping something in good and working condition. 

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