In which category does hyperbole belong?

Hyperbole, derived from a Greek word meaning "over-casting," is a figure of speech that involves an exaggeration of ideas for the sake of emphasis.

Explanation:

It is a device that we employ in our day-to-day speech. For instance, when you meet a friend after a long time, you say, "It's been ages since I last saw you." You may not have met him for three or four hours, or a day, but the use of the word "ages" exaggerates this statement to add emphasis to your wait. Therefore, a hyperbole is an unreal exaggeration to emphasize the real situation. Some other common Hyperbole examples are given below.

Answer: hyperbole is a figure of speech.

Explanation: According to Oxford dictionary, hyperbole ia an exaggerated statement or claim not meant to be taken literally.