All 7 Uses of

coincidence
in
The Unbearable Lightness of Being

Our day-to-day life is bombarded with fortuities or, to be more precise, with the accidental meetings of people and events we call coincidences.†
Chpt 2 *

coincidences = situations where things happened at the same time by chance even though they were unlikely

If the seat Tomas occupied had been occupied instead by the local butcher, Tereza never would have noticed that the radio was playing Beethoven (though the meeting of Beethoven and the butcher would also have been an interesting coincidence).†
Chpt 2

coincidence = a situation where things happened at the same time by chance even though it was unlikely

It is wrong, then, to chide the novel for being fascinated by mysterious coincidences (like the meeting of Anna, Vronsky, the railway station, and death or the meeting of Beethoven, Tomas, Tereza, and the cognac), but it is right to chide man for being blind to such coincidences in his daily life.†
Chpt 2

coincidences = situations where things happened at the same time by chance even though they were unlikely

It is wrong, then, to chide the novel for being fascinated by mysterious coincidences (like the meeting of Anna, Vronsky, the railway station, and death or the meeting of Beethoven, Tomas, Tereza, and the cognac), but it is right to chide man for being blind to such coincidences in his daily life.†
Chpt 2

Later, lying next to Tereza, he recalled that he had been led to her by a chain of laughable coincidences that took place seven years earlier (when the chief surgeon's sciatica was in its early stages) and were about to return him to a cage from which he would be unable to escape.†
Chpt 5

He had come to medicine not by coincidence or calculation but by a deep inner desire.†
Chpt 5

coincidence = a situation where things happened at the same time by chance even though it was unlikely

Definitions:

(1) (coincidence)
a situation where two things happened at the same time or in the same way by chance even though it was unlikely

(for example, if two students in the same class met by accident while visiting another country)
(2) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

Much more rarely coincidence can refer to things coinciding (occurring or operating at the same place or time). For example:
- the coincidence of a target and cross hairs
- the coincidence of entangled particles in quantum physics