coincidence

Noun

• the temporal property of two things happening at the same time
  • the interval determining the coincidence gate is adjustable
    

• the quality of occupying the same position or area in space
  • he waited for the coincidence of the target and the cross hairs
    

• an event that might have been arranged although it was really accidental

Related words

• Synonyms: 
  concurrence , conjunction , co-occurrence , happenstance