symbolic
Representing an idea or feeling instead of being it.
Symbolic means representing something else, usually an idea or quality, rather than being the thing itself. When a dove appears in a painting to represent peace, the dove is symbolic. When an Olympic athlete receives a gold medal, that medal is symbolic of their achievement and years of hard work.
Symbols work because we agree on what they mean. A crown is symbolic of royalty and power. A heart shape is symbolic of love, even though real hearts don't look like that at all. The American flag is symbolic of the entire nation and its ideals. These objects carry meaning beyond what they physically are.
Actions can be symbolic too. When a mayor plants a tree to mark the start of a new park, that single tree is symbolic of the whole project and the city's commitment to green spaces. When teammates put their hands together before a game, the gesture is symbolic of their unity.
Understanding symbolism helps you read stories more deeply. In The Lion, the Witch and the Wardrobe, the lion Aslan is symbolic of courage and sacrifice. In Charlotte's Web, Charlotte's web itself is symbolic of creativity and friendship. Writers use symbolic objects and moments to add layers of meaning to their stories, letting one thing stand for something larger and more important.