The purpose of the article is to conceptualize the phenomena of «ethnic» and «national» identity and to determine the vectors of their development. Research methods are based on the fundamental principles of historical and cultural analysis. The methodological core of the research is a comparative analysis of ethnic and national identities in the chronotype as complex sociocultural systems. The scientific novelty lies in the conceptualization of the ethnonational identity dichotomy through the prism of the cultural code. It is substantiated that in the conditions of modern modernization, the ratio between the ethnic and national components of identity depends on the direction of their development vectors: a) when the vectors are parallel and equally oriented (for example, one of the ethnic communities monopolizes power), there is a reduction of national identity to ethnic one; b) when the vectors are parallel, but oppositely oriented (for example, when an ethnic community seeks to recognize its right to political self-determination), national identity collides with the interests of the ethnic community, entering into confrontation with it. Conclusions. Within the framework of constructivism, the phenomenon of ethnic identity is analyzed as a social construct and the factors of deviation from this model are revealed (in particular, adaptation to the environment, acculturation, violation of the demographic balance between different groups), causing its variability. The systemic characteristics and the main conceptual components of national identity (internal and external) are analyzed, factors of the weakening of social ties due to the processes of globalization, the growth of entropy, and information expansion in society are identified. Typical models of interaction of ethnic and national identities are considered.
Keywords: ethnic identity, national identity, cultural code, ethnos, nation.