The Chinese word **车顶 (chēdǐng)**, meaning "car roof," is a straightforward compound noun formed through semantic combination. It follows the common modifier-head structure in Chinese, where the first character **车 (chē)**, meaning "vehicle," acts as the modifier to specify the category. The second character **顶 (dǐng)**, meaning "top" or "summit," serves as the head, indicating the specific part. Thus, the term literally and logically means "the top of a vehicle," which precisely defines the object it names.