Auction Bridge is a term used to describe a bidding system in the game of Bridge. The term "auction" refers to the process of bidding for the contract to take on a certain number of tricks. However, there are several synonyms for the phrase Auction Bridge in the world of card games. One of the most common synonyms for Auction Bridge is Contract Bridge. This term is widely used, especially in North America, to describe the same bidding system. Another synonym for Auction Bridge is simply Bridge. This term is used to encompass all forms of the game, including the auction variation. Finally, some people may refer to Auction Bridge as simply "Auction," emphasizing the bidding aspect of the game.