earnest vs security

earnest

noun
  • A sum of money paid in advance as a deposit; hence, a pledge, a guarantee, an indication of something to come. 

  • Gravity; serious purpose; earnestness. 

  • Seriousness; reality; actuality (as opposed to joking or pretence) 

verb
  • To be serious with; use in earnest. 

adj
  • Intent; focused; showing a lot of concentration. 

  • Serious or honest. 

  • Strenuous; diligent. 

  • Focused in the pursuit of an objective; eager to obtain or do. 

  • Serious; weighty; of a serious, weighty, or important nature; important. 

  • Possessing or characterised by seriousness. 

security

noun
  • A guarantee. 

  • 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. 

  • 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. 

  • Freedom from apprehension. 

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

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