"Fleeting" or "ephemeral" refers to something that lasts for a very short time. This concept can apply to various aspects of life, such as moments, experiences, or even natural phenomena. For example, a sunset can be considered ephemeral because it changes quickly and is gone before you know it. In art and literature, the idea of ephemerality often highlights the beauty of transient experiences. Many artists create works that capture fleeting moments, like a flower blooming or a rainbow appearing after a storm. These creations remind us to appreciate the present, as nothing lasts forever.