auction vs auctioneer

auction

verb
  • To sell at an auction. 

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

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

auctioneer

verb
  • To sell at an auction; to auction. 

noun
  • A person who conducts an auction on behalf of a vendor, taking bids to find the best price for the vendor. 

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