bargain vs protocol

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 

protocol

noun
  • An amendment to an official treaty. 

  • A set of formal rules describing how to transmit or exchange data, especially across a network. 

  • The set of instructions allowing a licensed medical professional to start, modify, or stop a medical or patient care order. 

  • The official rules and guidelines for heads of state and other dignitaries, governing accepted behaviour in relations with other diplomatic representatives or over affairs of state. 

  • The official formulas which appeared at the beginning or end of certain official documents such as charters, papal bulls etc. 

  • The minutes, or official record, of a negotiation or transaction; especially a document drawn up officially which forms the legal basis for subsequent agreements based on it. 

  • The first leaf of a roll of papyrus, or the official mark typically found on such a page. 

  • The original notes of observations made during an experiment; also, the precise method for carrying out or reproducing a given experiment. 

  • An accepted code of conduct; acceptable behaviour in a given situation or group. 

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