Kim Ji-suk. 2013. Study on the Semantic Divergence and Lexical Items of Ojingeo(Squid) in Fishing Village of Ulleungdo. The Sociolinguistic Journal of Korea 21(3). This study is to inquire into the Ullenungdo's own linguistic uniqueness by way of the lexical items of Ojingeo whose old forms remain a lot for the fishermen who reside in Ullenungdo. And also, this study is to investigate the classification mechanism of Ojingeo-related lexicons, the degree of the lexical productivity, and then the ethnographic quality of the lexical items of Ojingeo. Firstly, the superordinates referring to Ojingeo in Ullenungdo are ‘Ikka, Surume, Ojingeo, Pidungeokkolttugi, Jogi’. Just like this, the five names of the main categories are large in number in this area, which means that the ecological distribution of Ojingeo is large and the cultural, social importance of fishes in the relevant area is great. In view of the fishermen's knowledge and the lexical productivity, it is found out that ‘Ikka’ and ‘Ojingeo’ are the word referring to the whole of Ojingeo and ‘Surume, Pidungeokkolttugi, Jogi’ are the word referring to the individual of Ojingeo. Secondly, the lexical items of Ojingeo were diversified into ‘Najojingeo, Dongsamojingeot, Taengchi, Jungchit, Tasaijji, Yoijjit, Tseonmangojingeot, Taljogi, Sutjogi’ by ‘size adult and young fishes, fishing period, fishing tool, color, male and female based on the subordinates ‘Ikka’ and ‘Ojingeo’. Fishermen group's own classification method, that is, private classification method is appeared productively in relation to the edible value, the work efficiency of fishermen, and the economic feasibility. It means that Ojingeo, the important ground of fishing activity, constructs the world of fishermen's experience, and is recognized, used as a genuine cultural mode. Thirdly, the catching period and season of Ojingeo much influenced the amount of catches, which influenced the fishing operations such as ‘Dongsamjigi, Chodeungbari’ and ‘Haechigi, Natchigi, Dalchigi, Saetbyeolchigi’. It is also related with the ethnographic quality and leads to the creation and use of idiomatic expressions such as ‘To eat the red-bean gruel on the winter solstice means the sixty age(the last catch) of Ojingeo, The winter solstice is the sixty age of Ojingeo, Dojikgi, The first catch of Ojingeo can not be kept long.’ (332 words)