The word "课堂" (kètáng), meaning "classroom", is a compound noun formed through semantic combination, a common method in Chinese word formation. It consists of two meaningful characters: "课" (kè), which means "lesson" or "subject", and "堂" (táng), which denotes a "hall" or a large room. When combined, the second character "堂" specifies the physical or conceptual space for the activity indicated by the first character "课", effectively creating the meaning "the hall where lessons take place". This structure follows a modifier-head pattern where "课" modifies the type of "hall", resulting in a single, efficient unit that conceptually encapsulates both the activity (learning) and its designated environment.