bankroll vs life savings

bankroll

noun
  • The monetary assets of a person or organization. 

  • A roll of banknotes or other paper currency, carried in lieu of a wallet. 

verb
  • To fund a project; to underwrite something. 

life savings

noun
  • A large sum of money one has saved over a considerable number of years. 

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