What Metaphors are in the Ode on a Grecian Urn?

In "Ode on a Grecian Urn," Keats uses the urn as a metaphor for beauty frozen in time, highlighting the contrast between the permanence of art and the fleeting nature of human life. The urn is also symbolic of the power of art to transcend time and capture moments that would otherwise be lost. Additionally, the figures portrayed on the urn serve as metaphors for the joys and sorrows of life, reminding the viewer of the complexities of human experience.