Execute (verb)

1. Carry out (a plan, order, or course of action).
2. Put (someone) to death as a legal penalty.
3. Perform or carry out (a task or action).

Origin:

Late middle english (in the sense "put to death"): from latin exequi "follow out, carry out", from ex- "out" + sequi "follow".

Examples:

1. He was executed for his crimes.
2. The company executed a successful marketing campaign.
3. The CEO was responsible for executing the company's strategy.
4. The government executed the plan to reduce poverty.
5. The company executed the merger and the two companies became one.