The word 圈套 is formed by combining two characters, each contributing a vivid physical image that merges into a single, powerful metaphor. 圈 (quān) depicts a circle, loop, or enclosure, suggesting something that surrounds and confines. 套 (tào) conveys the idea of a covering, a sheath, or the action of encasing. When paired, they visually and conceptually create the image of a pre-set loop or snare that is designed to close around and entrap its target, thus naturally evolving to mean a "trap", "ruse", or "deceptive scheme". The formation is a direct, almost pictorial, synthesis of two concrete ideas into one abstract concept of entrapment.