事件

event / happening / incident / CL:個|个[ge4]

matter / thing / item / work / affair / CL:件[jian4],樁|桩[zhuang1],回[hui2]

item / component / classifier for events, things, clothes etc

(neuroscience) event-related potential

the Arrow Incident of 1856 (used as pretext for the second Opium War)

random accident / chance event

Tiananmen Incident of June 4, 1989

The Rape of Nanking (1997 documentary book by Iris Chang 張純如|张纯如[Zhang1 Chun2 ru2])

massacre / Holocaust

the Mukden or Manchurian Railway Incident of 18th September 1931 used by the Japanese as a pretext to annex Manchuria / also known as 9-18 incident 九一八事變|九一八事变[Jiu3 Yi1 ba1 Shi4 bian4]

see 柳條湖事件|柳条湖事件[Liu3 tiao2 Hu2 Shi4 jian4]

nuclear incident

historical incident