event

occurrence, event, incident, episode, circumstance mean something that happens or takes place. occurrence may apply to a happening without intent, volition, or plan.

• • an encounter that was a chance occurrence

event usually implies an occurrence of some importance and frequently one having antecedent cause.

• • the events following the assassination

incident suggests an occurrence of brief duration or secondary importance.

• • a minor wartime incident

episode stresses the distinctiveness or apartness of an incident.

• • a brief romantic episode in a life devoted to work

circumstance implies a specific detail attending an action or event as part of its setting or background.

• • couldn't recall the exact circumstances