execute [ˈɛksɪkjuːt] (verb)
executive [ɛɡˈzɛkjʊtɪv] (noun / adjective)
Before you can execute a program, you need to compile it.
Before you can a program, you need to compile it.
The President is the chief executive of the U.S.A.
The President is the chief of the U.S.A.