The word "完成" is formed by combining two characters: "完" and "成". "完" is structurally composed of the radical "宀" (representing a roof or enclosure) atop "元" (meaning primary or origin), historically conveying the concept of something being intact or whole, as if safeguarded under a cover. "成" derives from ancient pictographic elements that depict a spear or weapon, symbolizing the idea of reaching a goal or accomplishment, often through effort or conflict. When merged, "完成" synergistically blends the notion of wholeness from "完" with the sense of achievement from "成", resulting in a meaning centered on thoroughly bringing something to a successful conclusion.