Urbanism
Urbanism refers to both the material aspects of urban living and the cultural aspects of city life.
On the one hand, urbanism indicates the rural–urban movement of populations (urbanization) or their degree of concentration in urban areas. On the other hand, urbanism describes the characteristic way of social interaction of inhabitants of towns and cities (urban areas).
Urbanism constitutes the core interest of disciplines such as urban planning (as concerns the physical design and management of urban structures) and urban sociology (as concerns the study of urban life and culture).
Theory
Currently many architects, planners, and sociologists (like Louis Wirth) investigate the way people live in densely populated urban areas from many perspectives including a sociological perspective. To arrive at an adequate conception of 'urbanism as a way of life' Wirth says it is necessary to stop 'identify[ing] urbanism with the physical entity of the city', go 'beyond an arbitrary boundary line' and consider how 'technological developments in transportation and communication have enormously extended the urban mode of living beyond the confines of the city itself.'