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a planned public or social occasion
The wedding was a joyous event.
The wedding was a happy planned social occasion.
The company hosted an event to celebrate its anniversary.
The company organized a public occasion to celebrate its anniversary.
An event is typically a planned gathering or happening, often with a specific purpose or theme.
something that happens, especially something important or unusual
The discovery of the new planet was a historic event.
The discovery of the new planet was an important and unusual happening.
The event changed the course of history.
The happening altered the course of history.
In this sense, 'event' refers to any significant occurrence, not necessarily a planned one.
'Event' can refer to both planned occasions (e.g., a concert) and unplanned happenings (e.g., a natural disaster). Context usually makes the distinction clear.
From Middle English 'event', from Old French 'evenement', from Latin 'evenire' meaning 'to happen'.
The word 'event' can refer to both planned gatherings and significant happenings. The context usually clarifies which meaning is intended.