The Chinese word **橡树** (xiàngshù), meaning "oak tree," is a compound noun formed through semantic combination. The first character, **橡**, historically refers to the oak tree or the rubber tree, carrying the core meaning of the specific plant. The second character, **树**, is a generic term for "tree." When combined, **橡** acts as a modifier specifying the type, and **树** serves as the general category, resulting in the precise meaning "oak tree." This follows the common Chinese word-formation pattern where a specific element modifies a general element to create a new, more specific term.