guarantee vs guaranty

guarantee

noun
  • The person to whom a guarantee is made. 

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

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

  • 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. 

guaranty

noun
  • An assurance or guarantee. 

  • Something serving as a security for such an undertaking. 

  • An undertaking to answer for the payment of some debt, or the performance of some contract or duty, of another, in case of the failure of such other to pay or perform; a warranty; a security. 

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