guarantee vs safeguard

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. 

safeguard

noun
  • Something that serves as a guard or protection; a defense. 

  • A safe-conduct or passport, especially in time of war. 

  • One who, or that which, defends or protects; defence; protection. 

verb
  • To escort safely. 

  • To implement safeguarding. 

  • To protect, to keep safe. 

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