perform vs warranty

perform

verb
  • To fulfill contractually agreed-to terms. 

  • To exhibit an expected pattern of behavior; to function; to work. 

  • To act in accordance with (a contract); to fulfill one’s terms of (a contract). 

  • To do (something); to execute. 

  • To do (something) in front of an audience, such as acting or music, often in order to entertain. 

  • To behave theatrically so as to give the impression of (a quality, character trait, etc.); to feign. 

  • To behave in accordance with, and thereby in turn shape, (a social notion or role). 

  • To behave in ways that carry meaning in social contexts. 

warranty

verb
  • To warrant; to guarantee. 

noun
  • A written guarantee, usually over a fixed period, provided to someone who buys a product or item, which states that repairs will be provided free of charge in case of damage or a fault. 

  • A guarantee that a certain outcome or obligation will be fulfilled; security. 

  • A stipulation of an insurance policy made by an insuree, guaranteeing that the facts of the policy are true and the insurance risk is as stated, which if not fulfilled renders the policy void. 

  • A legal agreement, either written or oral (an expressed warranty) or implied through the actions of the buyer and seller (an implied warranty), which states that the goods or property in question will be in exactly the same state as promised, such as in a sale of an item or piece of real estate. 

  • Justification or mandate to do something, especially in terms of one’s personal conduct. 

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