When two or more towns grow to join each or one another and still retain their identities they form a

When two or more towns grow to join each other and still retain their identities, they form a conurbation. A conurbation is a type of urban area where multiple cities, towns, or urban centers grow together and merge into a single continuous urban area. In a conurbation, each of the constituent towns retains its own individual identity and administrative boundaries, but they share common infrastructure, transportation systems, and other facilities. Conurbations are characterized by high population density, economic integration, and social interaction between the constituent towns. Examples of conurbations include the New York City metropolitan area and the Greater London Urban Area.