A coincidence of differences that may result from discords or antagonisms: The clash of opinions caused tensions during the political debate and so they agreed that there had to be some way to diminish such clashes.

1. To bang or bring two items together in a manner that causes a loud, crashing noise: As the men unloaded the garbage cans early in the morning, they would often wake up the neighborhood because they clashed the containers so loudly.
2. To engage in violent conflict or fighting with another individual or group: It was recorded that the armies clashed on this plain many years ago.
3. To engage in harsh verbal disagreement, to argue: The politicians were clashing because they couldn't agree as to what should be done by the central government.