Homonym: witness (Observer)
A "witness" is a person who sees an event, particularly a crime or accident, and can provide a firsthand account of what happened. Witnesses can be crucial in legal situations, as their testimonies can help establish facts and clarify details for law enforcement and the court.
In a broader context, witnesses can also refer to individuals who observe significant events, such as weddings or historical moments. Their observations can contribute to the collective memory of an event, providing insights and perspectives that may not be captured in official records.