For instance in the 'Night at the Opera' dream, a tower appeared in the middle of the auditorium. It transpired that the tower referred to a musician whom the dreamer thought 'towered above' all others in his profession. From these examples it can be seen that the idea of displacement is wide ranging in Freud's theory of dreams. It refers to both the 'pychical intensity' of different dream elements, the 'affect' in dreams, and the 'language' of the dream-thoughts. Between them, condensation and displacement are the essence of the dream-work.
Dreams are, in fact, masses of composite structures joined together like pack ice.