employ vs intermediary

employ

noun
  • The state of being an employee; employment. 

verb
  • To hire (somebody for work or a job). 

  • To use (somebody for a job, or something for a task). 

  • To make busy. 

intermediary

noun
  • A person or organisation in an intermediate position (in a transaction, agreement, supply chain etc.) 

  • One or several stages of an event which occurs after the start and before the end. 

  • An agent acting as a mediator between sides to facilitate agreement or cooperation. 

adj
  • Intermediate. 

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