The word "缝纫" is formed by combining the characters "缝" and "纫", both containing the silk radical (纟) to denote association with thread or fabric. "缝" incorporates the phonetic component "逢" (féng) to suggest sound and the action of stitching, while "纫" uses the phonetic component "刃" (rèn) to indicate sound and the concept of threading, often involving a needle. Together, these characters semantically and phonetically complement each other to specifically mean sewing or tailoring.