The word "席位" is formed by combining the character "席", which originally denotes a mat or seat for sitting, with the character "位", which signifies a position or place. Together, they create a compound term where "席" contributes the concrete notion of a physical seat, and "位" adds the abstract sense of a formal or designated position, resulting in a word that specifically refers to a seat in a formal setting, such as in a meeting or assembly, implying both location and status.