"coincidence" in the noun sense
1. coincidence, happenstance
an event that might have been arranged although it was really accidental
2. coincidence
the quality of occupying the same position or area in space
"he waited for the coincidence of the target and the cross hairs"
3. concurrence, coincidence, conjunction, co-occurrence
the temporal property of two things happening at the same time
"the interval determining the coincidence gate is adjustable"
Source: WordNet® (An amazing lexical database of English)
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