guarantee vs surety

guarantee

noun
  • A legal assurance of something, e.g. a security for the fulfillment of an obligation. 

  • The person to whom a guarantee is made. 

  • A person who gives such a guarantee; a guarantor. 

  • More specifically, a written declaration that a certain product will be fit for a purpose and work correctly; a warranty 

  • Anything that assures a certain outcome. 

verb
  • To make something certain. 

  • To give an assurance that something will be done right. 

  • To assume or take responsibility for a debt or other obligation. 

surety

noun
  • That which makes sure; that which confirms; ground of confidence or security. 

  • A promise to pay a sum of money in the event that another person fails to fulfill an obligation. 

  • One who undertakes to pay money or perform other acts in the event that his principal fails therein. 

  • A substitute; a hostage. 

  • Evidence; confirmation; warrant. 

  • Certainty. 

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