By generalizing and developing Richards’s view and by counting limitations of both the substitution and comparison theories, Max Black explains his interaction theory of metaphor. Words in Blacks view, interact in a metaphorical expression to produce a meaning that is the result of this interaction. Black analyzes this interaction as an interaction between the framework and focus of metaphor in which framework, by providing a unique context to focus, imposes an extension of meaning to the focus word. The focus word acquires a new meaning from this interaction. This article is intended to provide a comprehensive and clear study of interaction theory.