What is another word for urban complexes?
Pronunciation: [ˈɜːbən kˈɒmplɛksɪz] (IPA) 
Urban complexes are large urban areas that are characterized by a high degree of population density, cultural diversity, and economic dynamism. Synonyms for urban complexes include metropolitan areas, cities, urban agglomerations, urban clusters, megacities, and conurbations. Metropolitan areas refer to large urban areas that are comprised of a central city and its surrounding suburbs. Cities refer to densely populated areas, typically with a central business district. Urban agglomerations are similar to metropolitan areas, but they may include multiple cities that are within close proximity to each other. Urban clusters refer to smaller urban areas that are connected to larger cities. Megacities refer to urban areas with a population of over 10 million. Conurbations refer to urban areas that are comprised of multiple cities or towns that have grown together over time.
