Symbolism (noun)

1. The use of symbols to represent ideas or qualities, especially in literature, art, and religion.
2. A system of symbols and the interpretation of these symbols.
3. The practice or art of using symbols, especially by investing things with a symbolic meaning or by expressing the invisible or intangible by means of visible or sensuous representations.

Origin:

Mid 19th century: from french symbolisime, from symbolique, from symbol "token, symbol".

Examples:

1. The novel makes use of symbolism to convey the themes of love and loss.
2. The artwork is rich in symbolism and meaning.
3. The symbolism in the rituals of the religion is complex.
4. The symbolism of the flag is an important part of the country's national identity.
5. The painting is full of symbolism, with each element representing a different idea.