insurance vs lottery

insurance

noun
  • The business of providing insurance. 

  • A means of indemnity against a future occurrence of an uncertain event. 

  • The car was totalled, but fortunately I had insurance. 

  • Any attempt to forestall an unfavorable event. 

  • A bet made after the deal, which pays off if the dealer has blackjack. 

  • An insurance policy 

lottery

noun
  • A scheme for the distribution of prizes by lot or chance, especially a gaming scheme in which one or more tickets bearing particular numbers draw prizes, the other tickets are blanks. 

  • Something decided by chance. 

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