The word **折叠 (zhédié)**, meaning "to fold," is a compound word formed by combining two characters with closely related meanings: **折 (zhé)**, which primarily means "to bend" or "to break," and **叠 (dié)**, which means "to layer" or "to pile up." In this **verb-verb coordinative compound**, the two actions are semantically sequential and complementary—first, one bends or creases an object (折), and then one lays or presses it upon itself to create neat layers (叠). Together, they create a single, more precise concept that encompasses the entire action of folding, as with paper or cloth, which is more specific than either character alone. This formation is a classic example of how Chinese compounds often synthesize related actions to define a complex activity.