The purpose of this study was to identify and to trace the origins and meanings of sok (速) and bosal (菩薩). Comparative linguistic analytical approches were employed for this research. The analysis of this study indicted that sok (速) of Koryo was derived from sok (速) of Chinese. the phonetic value of sok (速) and sok (速) in Chinese are su⁴. The word sok (粟) refers to kok 곡 (穀) and kok (穀) refers to ra (羅). The bosal (菩薩) of Koroyo was related ot textile terminologies of many languages such as Hebrew, Mongolic, Manchu, Gilyak, Turkish and so on. Therefore, the bosal of Koryo was identified as a fabric term used in Koryo.