Hyperbole

Hyperbole is the use of words and phrases to exaggerate a thought, feeling, object or event. Writers use this technique to create humour or sarcasm that is not intended to deceive.

“I’ve told you a million times not to exaggerate.”

Symbolism

Symbolism is the use of symbols, often objects, that have strong associations with well-known events or experiences.

i.e. A heart — Valentine’s Day