Incident (noun)

1. A happening or event, especially one that is remarkable or unusual.
2. A minor disagreement or dispute.
3. A specific occurrence of a security breach or violation of safety regulations.

Origin:

The word 'incident' originated in the late 16th century from the latin word 'incidentem' meaning 'to fall upon.'.

Examples:

1. The incident at the park caused a stir among the visitors.
2. The incident between the two neighbors was quickly resolved.
3. The incident was reported to the authorities for investigation.
4. The incident on the train was a terrifying experience for the passengers.
5. The incident at the border highlighted the need for better security measures.