a striking occurrence of two or more events at one time apparently by mere chance

Our meeting in Venice was pure coincidence.

the condition or fact of coinciding.

an instance of this.

noun

clash , deviation , difference , disagreement , divergence , mismatch , design , plan , scheme

noun

accompaniment , accord , accordance , collaboration , concomitance , concurrence , conformity , conjunction , consonance , correlation , correspondence , parallelism , synchronism , union , accident , chance , eventuality , fate , fluke , fortuity , happening , happy accident , incident , luck , stroke of luck , agreement , concourse