Urbanization: Urbanization is the process by which an increasing proportion of people live in urban areas rather than rural ones. Larger cities are often characterized by high levels of urbanization.
Megacity: A megacity is an exceptionally large metropolitan area with a population exceeding 10 million people. Megacities represent extreme examples of larger cities with diverse economic functions due to their immense size.
Urban Sprawl: Urban sprawl refers to the uncontrolled expansion of urban areas into surrounding rural lands. It can lead to increased congestion, decreased environmental quality, and challenges in providing services and infrastructure.