The Chinese word "工具箱" (gōngjùxiāng), meaning "toolbox," is a transparent compound noun formed through semantic combination. It consists of three characters: "工" (gōng, work), "具" (jù, tool), which together form the word "工具" (gōngjù, tool), and "箱" (xiāng, box or chest). The structure follows a modifier-head pattern common in Chinese, where "工具" (tool) acts as the modifier specifying the type, and "箱" (box) serves as the head noun indicating the category, thus logically creating the meaning "a box for tools."