In movies, symbols usually use symbolic symbols, objects, scenes or actions to convey specific meanings, which helps the audience to understand the theme or emotion expressed in movies more deeply. For example, red is usually used as a symbol of love, enthusiasm, danger and other emotions; The split and occlusion of the lens can symbolize the split and isolation of the characters' hearts.
The Shawshank Redemption
Metaphor expresses a certain meaning or information through suggestion or indirect way, and deepens the meaning of the film through the audience's association and imagination. Metaphor can be a metaphor in a conversation, an object that implies the characteristics of a character, and so on. For example, the bird of freedom in the movie The Shawshank Redemption is a metaphor, which symbolizes the freedom that Adam Smith yearns for.