In phenomenology, the terms the Other and the Constitutive Other identify the other human being, in their differences from the Self, as being a cumulative, constituting factor in the self-image of a person; as acknowledgement of being real; hence, the Other is dissimilar to and the opposite of the Self, of Us, and of the Same. The Constitutive Other is the relation between the personality (essential nature) and the person (body) of a human being; the relation of essential and superficial characteristics of personal identity that corresponds to the relationship between opposite, but correlative, characteristics of the Self, because the difference is inner-difference, within the Self.