attorney-in-fact vs broker

attorney-in-fact

noun
  • An agent of the person giving him/her the power of attorney (for a specific purpose or for general purposes) to act on his or her behalf. The attorney-in-fact’s power and responsibilities depend on the specific powers granted in the power of attorney document. 

broker

noun
  • An agent involved in the exchange of messages or transactions. 

  • A mediator between a buyer and seller. 

  • A stockbroker. 

  • A mediator in general, one who liaises between two or more parties to attempt to achieve an outcome of some kind. 

verb
  • To act as a broker; to mediate in a sale or transaction. 

  • To act as a broker in; to arrange or negotiate. 

How often have the words attorney-in-fact and broker occurred in a corpus of books? (source: Google Ngram Viewer )