occurrence

noun

1. the action, fact, or instance of occurring.
2. something that happens; event; incident: We were delayed by several unexpected occurrences.

noun

1. something that occurs; a happening; event
2. the act or an instance of occurringa crime of frequent occurrence

n.1530s, from Middle French occurrence “unexpected happening” or directly from Medieval Latin occurrentia, from Latin occurentem (nominative occurens), present participle of occurrere (see occur).