The word 差别 is formed through the combination of two independent characters, each contributing a core idea that merges into a single, more nuanced concept. The first character, 差, carries the fundamental meaning of "difference", "discrepancy", or "divergence", often implying an uneven or graded distinction. It is paired with 别, which means "to separate", "to distinguish", or "another category". Together, they create a composite meaning where 差 provides the notion of qualitative or quantitative variance, and 别 reinforces the act of categorical separation, resulting in the comprehensive idea of a "distinction" or "difference" between clearly demarcated things.