Cacophony is a combination of harsh, jarring, and discordant sounds. A screech, by its very nature, is a high-pitched, unpleasant sound that grates on the ears.
Here's why it fits the definition:
* Harsh: The sound of a screech is often described as abrasive and unpleasant.
* Jarring: It disrupts the listener's sense of peace and harmony.
* Discordant: It clashes with other sounds, creating an unpleasant dissonance.
Therefore, a harsh screech is a clear example of cacophony.