bargain vs exchange of contracts

bargain

noun
  • An agreement between parties concerning the sale of property; or a contract by which one party binds himself to transfer the right to some property for a consideration, and the other party binds himself to receive the property and pay the consideration. 

  • An item purchased for significantly less than the usual, or recommended, price 

  • A gainful transaction; an advantageous purchase. 

  • The thing stipulated or purchased. 

  • An agreement or stipulation; mutual pledge. 

verb
  • To transfer for a consideration; to barter; to trade 

  • To make a bargain; to make a deal or contract for the exchange of property or services; to negotiate 

exchange of contracts

noun
  • The point or stage at which a conveyancing contract comes into existence between negotiating parties for the carrying out of a disposition of an estate in land; usually requiring the payment of a deposit. 

  • The act of exchanging contracts. 

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