Which literary technique uses exaggeration for effect?

Hyperbole is a literary technique that involves deliberate and obvious exaggeration used to create emphasis or a dramatic effect. It often enhances the description of a character, situation, or emotion, making it more striking and memorable for the reader. For instance, if someone says, "I've told you a million times," they are using hyperbole to stress the frustration of having to repeat themselves rather than indicating a literal count of the instances.

This technique is particularly effective in poetry and prose, as it evokes strong visual images and helps to convey emotions more powerfully. Hyperbole can also serve to inject humor into the text or to highlight a particular trait or situation more vividly.