incident-n; 2 Senses

Sense Number 1: a distinct happening, an instance of an event, occurrence

Commentary: INCIDENT[+event][+happening][+distinct][+instance] a single distinct event
NOTE: does not imply a negative or disruptive occurrence (Sense 2)

Examples:
At dinner he related some amusing incidents from his trip to London.
In five years there was only one incident when John was late to an appointment.
I can't recall any other incidents of seeing that man in front of our house.

Mappings:
WordNet 3.0 Sense Numbers: 1

Sense Number 2: a public disturbance, an upheaval

Commentary: INCIDENT[+event][+happening][+social][+disturbance][+public]
NOTE: always implies a grave, violent or otherwise disruptive, event.
NOTE: a restricted usage of Sense 1, always with a negative implication

Examples:
The plane lost power in one engine, but returned to the airport without incident.
The police investigated a stabbing incident at the bus station.
There have been several incidents of joggers being mugged in the park.
The shooting of patrol guard constituted a serious border incident between the countries.

Mappings:
WordNet 3.0 Sense Numbers: 2