The word **长椅** (chángyǐ), meaning "bench," is a straightforward compound noun formed by combining two individual characters: **长** (cháng), an adjective meaning "long," and **椅** (yǐ), a noun meaning "chair." It follows the common Chinese word-formation structure of a descriptive modifier (**长**) placed before a core noun (**椅**), creating a new, specific term that literally translates to "long chair," which accurately describes the object's primary physical characteristic compared to a standard single-seat chair.