coincidence

noun4

1. •
   a situation in which events seem to be connected for a reason, but really happen by chance

   • That the two writers were born and died on the same day is just a coincidence, although there are many conspiracy theories about it.
   • It is sheer coincidence that the cartoon resembles the local politician.
2. •
   The property of being coincident, occurring at the same time or place.
3. •
   A coincidence point.
4. •
   A fixed point of a correspondence; a point of a variety corresponding to itself under a correspondence.