The Chinese word 轮椅 (lúnyǐ) for "wheelchair" is formed by directly combining two conceptual images: 轮 (lún), meaning "wheel", and 椅 (yǐ), meaning "chair". It is a straightforward compound where the first character specifies the key mechanical feature (wheels) and the second character defines the object's primary function and form (a seat for sitting). Together, they create a new, logical concept for an object that is essentially a chair equipped with wheels.