auction vs buy

auction

noun
  • A public event where goods or property are sold to the highest bidder. 

  • The first stage of a deal, in which players bid to determine the final contract. 

verb
  • To sell at an auction. 

buy

noun
  • Something which is bought; a purchase. 

verb
  • To make a purchase or purchases, to treat (for a drink, meal or gift) 

  • To make a bluff, usually a large one. 

  • To bribe. 

  • To be equivalent to in value. 

  • To obtain (something) in exchange for money or goods. 

  • To obtain, especially by some sacrifice. 

  • to accept as true; to believe 

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