The article deals with the mechanism of creating metaphor in the context of the theory of conceptual integration. A particular emphasis is laid on the basic theses of the theory of conceptual metaphor and the theory of conceptual integration. The comparison of G. Lakoff and M. Johnson's theory of conceptual metaphor and G. Fauconnier and M. Turner's theory of conceptual integration is carried out. The analysis of the examples of metaphorical mapping of the concept BOOK is conducted and three

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... ceptual metaphors of the given concept (the target domain) are defined. Each conceptual metaphor is described, the input spaces, generic and blended spaces are defined. The integrated roles and emergent properties and structures are determined and explained.