bargain vs promise

bargain

noun
  • An agreement or stipulation; mutual pledge. 

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

  • A gainful transaction; an advantageous purchase. 

  • 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. 

  • The thing stipulated or purchased. 

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 

promise

noun
  • an oath or affirmation; a vow 

  • A transaction between two persons whereby the first person undertakes in the future to render some service or gift to the second person or devotes something valuable now and here to his use. 

  • A placeholder object representing the eventual result of an asynchronous operation. 

  • Reason to expect improvement or success; potential. 

verb
  • To commit to (some action or outcome), or to assure (a person) of such commitment; to make an oath or vow. 

  • To give grounds for expectation, especially of something good. 

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