This paper attempts to investigate syntactic and semantic properties of the Korean comparative construction. It has been noted that Korean only permits phrasal comparatives involving a relative clause headed by kes. Since there are no clausal comparatives, it has been predicted that degree comparison is not available. However, in some cases, the comparison of degrees is possible in Korean. In this paper, I propose that a Korean pota-comparative sentence involves a relative clause headed by kes denoting either an individual or degree. In this way, a pota-comparative sentence can express the comparison of degrees when kes denotes degrees such as ‘height’ or ‘length’.