Main entry: concurrence, conjunction, coincidence, co-occurrence
Definition: the temporal property of two things happening at the same time
Usage: the interval determining the coincidence gate is adjustable
Main entry: coincidence
Definition: the quality of occupying the same position or area in space
Usage: he waited for the coincidence of the target and the cross hairs
Main entry: happenstance, coincidence
Definition: an event that might have been arranged although it was really accidental