auctioneer vs purveyor

auctioneer

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

verb
  • To sell at an auction; to auction. 

purveyor

noun
  • Someone who supplies what is needed, especially food. 

  • An officer who provided provisions for the king's household. 

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