
Coincident
Time Specific
Use 'coincident' when emphasizing that events happen simultaneously, more for unplanned or surprising timing.

The power outage was coincident with her arrival.
Not Cause-Effect
'Coincident' doesn't imply one event causes the other, just that they occur together.

Their career peaks were coincident, though unrelated.
Compare with
CoexistConcomitantConcurrentCorrespondParallelRelateSimultaneousSynchronous
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