The term 'Green City' refers to a city of greenery - that of trees, plants etc. While the term 'Clean City' refers to a city that is free from pollution and environmental degradation. Both these term are relative in nature. A city that has many trees planted all over will be free from environmental problems as trees help to purify the air and maintain the cycle of nature.
A Green City improves the environment, ensures rich biodiversity, reduce air pollution, ensure water storage and help cooling down in warm periods. Green is also essential for a climate-proof and sustainable environment.
