Urban development refers to the gradual growth and expansion of cities and their surrounding areas over time. There are several synonyms for the term "urban development," including "city planning," "metropolitan growth," "urbanization," "territorial expansion," and "urban renewal." City planning involves the systematic and deliberate organization and design of city infrastructure and services to accommodate the growing needs of its residents. Metropolitan growth refers to the physical expansion of urban areas as more people move to the city. Urbanization refers to the process of developing urban areas by increasing the number of people living in them. Territorial expansion involves the expansion of city limits and annexation of nearby rural areas. Lastly, urban renewal involves the rejuvenation of old, disused urban areas through redevelopment, renovation, and restoration.