Issues regarding "generation" are facing a renaissance during recent years. One of prevailing reasons for this development is the crisis of collective identities due to diverse contemporary socio-political circumstances and cultural characteristics of Korean society. However, it is often criticized that the sociological examination of this topic is rather in a obscure stage resulting from the inherent confusion and ambiguities mainly caused by the mixed usage of the concept. In this regard, this study explores the possibility of answering these critics and refining the systemic usage for the sociology of generation in the realm of social changes and social innovations. For this purpose, analytical classification of the concept based on various contextual typology are attempted.attempted.