GradeGen

The main concentration of shops, offices and other commercial activities in a city.

The central area of a city where commercial activities, such as offices and shops, are concentrated.

A simple model places a CBD in the centre, surrounded by the inner city, suburbs and an urban–rural fringe. This is useful for organising observations, but London does not form four perfectly uniform rings.

The central area of a city where businesses, offices and shops are concentrated.

The main commercial and business centre of a city, containing activities such as offices, banking and retail.

A useful starting model has four zones: the CBD, inner city, suburbs and urban-rural fringe. It is a way of organising observations, not an exact map of Mumbai.

The main commercial centre of a city, with a concentration of offices, shops and services.

Do not force Mumbai into a neat concentric-ring model. Its peninsula, coastal CBD and mainland development make its structure more complicated.

Use London examples, but qualify general patterns: redevelopment means that newer buildings can also be found in the CBD and inner city.