insurance vs security

insurance

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

  • The business of providing insurance. 

  • 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 

security

noun
  • Freedom from apprehension. 

  • Proof of ownership of stocks, bonds or other investment instruments. 

  • Property etc. temporarily relinquished to guarantee repayment of a loan. 

  • Something that secures the fulfillment of an obligation or law. 

  • A guarantee. 

  • The condition of not being threatened, especially physically, psychologically, emotionally, or financially. 

  • Something that secures. 

  • An organization or department responsible for providing security by enforcing laws, rules, and regulations as well as maintaining order. 

  • A tradeable financial asset, such as a share of stock.ᵂ 

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