1. Coincidence in space and time, illustrated by the common example of a chance (and unlikely) meeting of two friends.
2. Coincidence in time, illustrated by the independent parallel work of Wallace and Darwin, Leibniz and Newton, etc. and by other parallel, identical or similar events separated by space.
3. Coincidence in space, illustrated by the successive, change arrivals of two or more related beings, objects, or phenomena, in the same physical place, separated by time.
4. Coincidence in mind, illustrated by the chance arising in the mind (through memory, imagination or cognition, etc.) of opposite or linked information.
5. Chance events of linked or meaningful natures involving space, time and mind.
6. ESP phenomena.
7. Any event statistically unjustified (unpredictable, unlikely, singular, etc.).