Symbolism

Definition
Symbolism litterally means the use of symbols to represent ideas or qualities.

Example:Piggy and Ralph spot a conch and decide to use it to call a meeting. The Conch is from there on refered to as a symbol of law and order.

Explanation

Quote
"Rule of the Conch." The rule of the conch was that if you had the conch you could talk without being interrupted. The conch is a representation of order without adults.