noun
hyperbole
A figure of speech that uses extreme exaggeration for emphasis or effect, not meant to be taken literally. Common in literature, speeches, and everyday conversation.
「死ぬほど疲れた」は誇張法の一例です。
"I'm so tired I could die" is an example of hyperbole.
彼の話はいつも誇張法が過ぎる。
His stories always have too much hyperbole.
比喩 is the broader category of figures of speech, including simile and metaphor; 誇張法 is a specific type of 比喩.
Compound of 誇張 (exaggeration) + 法 (method, rule). The term is a direct translation of the Western rhetorical concept 'hyperbole'.