The word disaster is made of two French words. Dis – meaning bad and Aster – meaning stars. So, disaster means – bad stars. In India, disaster is also called the wrath of nature. A hazard is an agent which has the potential to cause harm to a vulnerable target. The terms hazard and risk are used inter – changeably. However, in terms of risk assessment, these are two very distinct terms. A disaster causes hazard and creates problems of many types.