The Chinese word **大雨** (dàyǔ), meaning "heavy rain," is a straightforward example of a compound word formed through semantic combination, specifically using a **modifier-head structure**. The first character, **大** (dà), acts as an adjective meaning "big" or "heavy," and it directly modifies the second character, **雨** (yǔ), the noun meaning "rain." This construction follows a common pattern in Chinese where an attributive element precedes a core noun to create a new, specific term, resulting in the literal and intuitive meaning of "big rain."