approval vs warranty

approval

noun
  • An expression granting permission; an indication of agreement with a proposal; an acknowledgement that a person, thing, or event meets requirements. 

  • Something mailed by a seller to a collector to match their stated interests; the collector can approve of or return the item. 

  • An expression of favorable acceptance and encouragement; a compliment that also condones. 

warranty

noun
  • 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. 

  • 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. 

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

verb
  • To warrant; to guarantee. 

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