Final answer:
The term 'commence' is used to indicate when something like an event begins or starts. It is synonymous with initiation or startup.
Step-by-step explanation:
An event is said to commence when it begins or starts. The term 'commence' is synonymous with the initiation or startup of something. For example, we might say, 'The concert will commence at 7 pm,' meaning the concert will start at that time.
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