The term "ghostly" or "ethereal" refers to something that is light, delicate, and often otherworldly in appearance. It evokes a sense of the supernatural, resembling a ghost or spirit. Ethereal qualities can be found in art, literature, and nature, where they create an atmosphere of mystery and beauty. In literature, ethereal characters or settings often symbolize the transient nature of life or the presence of the supernatural. Ethereal music, with its soft and airy tones, can also evoke feelings of calmness and introspection, enhancing the overall ghostly ambiance.