agree vs bargain

agree

verb
  • To make a stipulation by way of settling differences or determining a price; to exchange promises; to come to terms or to a common resolve; to promise. 

  • To consent to a contract or to an element of a contract. 

  • To be in harmony about an opinion, statement, or action; to have a consistent idea between two or more people. 

  • To suit or be adapted in its effects; to do well. 

  • To give assent; to accede 

  • To correspond to (another word) in a grammatical category, such as gender, number, case, or person. 

  • To yield assent to; to approve. 

  • To resemble; to coincide; to correspond. 

bargain

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

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

noun
  • 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. 

  • An agreement or stipulation; mutual pledge. 

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