exercise

noun | \ ˈek-sər-ˌsīz \ | ex·er·cise
  1. : the discharge of an official function or professional occupation

  1. : the act or an instance of carrying out the terms of an agreement (as an option)

exercise

transitive verb
  1. : to make effective in action exercising power

  1. : to bring to bear exercise influence

  1. : to implement the terms of (as an option)