Disaster :
A sudden occurrence of an accident that causes huge loss of life and property is called as a disaster.
It is also called as a calamity.
Types of disaster :
There are two types of disaster: natural and man-made.
1. Natural Disaster: A disaster caused by natural factors called as a natural disaster e.g., earthquake, flood, cyclone etc.
2. Man-made disaster: A disaster caused due to the human activities e.g., wars, fire accidents, industrial accidents etc.