The Chinese word **暴雨 (bàoyǔ)**, meaning "rainstorm" or "heavy rain," is a compound noun formed through semantic combination. It consists of two characters: **暴 (bào)**, which conveys the meaning of "sudden," "violent," or "intense," and **雨 (yǔ)**, which means "rain." When combined, the modifier **暴** descriptively intensifies the core noun **雨**, creating a precise term for a specific meteorological phenomenon—a violent, torrential downpour. This structure follows the common Chinese word-formation pattern of an adjective-like element modifying a substantive element to produce a new, composite meaning.