The word 时空 is formed through the direct conceptual fusion of its two core characters: 时 (shí), meaning "time", and 空 (kōng), meaning "space" or "void". It is not a description of one quality modifying the other, but rather a seamless merging of the two fundamental, interrelated dimensions of existence into a single, unified concept. This compound creates a holistic idea greater than the sum of its parts, directly mirroring the modern philosophical and scientific understanding of a combined "space-time" continuum, where the two are intrinsically linked and cannot be meaningfully separated.