Execution

[Gregory]

The act of carrying out a [death sentence], typically due to a major [infraction] of the law. This is most commonly done by injection of a deadly substance. Certain countries have public executions, public events where people are welcome to watch the executions of felons. The term is also associated with the murder of [hostages] at the hands of terrorists.

[Tanya Shivari]

The [carrying] out of something.

[The event] or occurance of [a thing] that is executed.