The word "欲望" is formed by combining two characters: "欲", which itself is composed of "谷" (valley) and "欠" (lack), depicting a sense of want or need, and "望", which combines "亡" (to flee), "月" (moon), and "王" (king), historically representing gazing afar with expectation. Together, "欲" contributes the notion of desire, while "望" adds the aspect of longing or hope, resulting in a compound meaning that emphasizes a strong craving or urge.