Korean adjective ‘gomabda’ is different with Korean verb ‘gamsa(感謝)-hada’. The former is the pure Korean word which describes the features of subject, and the latter is the verb which derives from Chinese word ‘ganxie(感謝)’. Three nations of East-asia, Korea-China-Japan, have simultaneously common and different features. They are same in the macro-culture of using Chinese characters and chopsticks, but they have also differences in micro-culture. To make peace in the midst of these three nations, we need to search other’s strength rather than other’s weakness. Then we can say to each ‘gomabda’. Yun Dong-joo(1917-1945), one of the best famous Korean poets is the model having lived and died through modern Korean history. Especially his masterpiece, < Prologue(序詩) > makes us develop our peaceful mind at East-asian era like nowadays. I think it will have been indicating the general value of east-asia for making a peace among our three nations. (Yonsei University)