The word "死去" is formed by combining two conceptual actions into a single, intensified process: the character "死" (to die) denotes the fundamental event of death, while "去" (to go, to depart) is appended not to create a grammatical direction but to layer on a vivid spatial metaphor of departure or transition away from the current state of being. This fusion paints a more complete picture than "死" alone, conceptually framing death as an active departure or a leaving from life, thereby emphasizing the dynamic and transitional nature of the event itself.