concurrence

When things happen at the same time, it's a concurrence. If you pull up at a traffic light and you see your teacher in the car next to yours and your neighbor behind you, it's an unlikely concurrence.

The Latin root of concurrence is concurrentia, which means "a running together." You can use the noun concurrence to describe things that exist together or at the same time, and also when there's an agreement, especially of results or opinions, like a concurrence of opinions among the school board about spending money on a new playground, or a concurrence in your family about wanting pancakes for breakfast.

Definitions of concurrence
  1. noun
    the temporal property of two things happening at the same time
    synonyms: co-occurrence, coincidence, conjunction
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    types:
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    concomitance
    occurrence or existence together or in connection with one another
    overlap
    the property of partial coincidence in time
    contemporaneity, contemporaneousness
    the quality of belonging to the same period of time
    unison
    the act of occurring together or simultaneously
    type of:
    simultaneity, simultaneousness
    happening or existing or done at the same time
  2. noun
    agreement of results or opinions
    synonyms: concurrency
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    type of:
    agreement
    the verbal act of agreeing
  3. noun
    a state of cooperation
    synonyms: meeting of minds
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    type of:
    accord, agreement
    harmony of people's opinions or actions or characters
  4. noun
    acting together, as agents or circumstances or events
    synonyms: concurrency
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    type of:
    cooperation
    joint operation or action
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