exaggeration

Short definition from Wiktionary

Noun

1. 1
   The act of heaping or piling up.
2. 2
   The act of exaggerating; the act of doing or representing in an excessive manner; a going beyond the bounds of truth, reason, or justice; a hyperbolical representation; hyperbole; overstatement.
3. 3
   A representation of things beyond natural life, in expression, beauty, power, vigor.