Natural disaster: A natural disaster is a major adverse event that results from the Earth's natural processes; Examples include floods, etc.
NOUN. The houses were flooded by natural disasters.
Drought: Lack of rain for a prolonged period of time that produces dryness in the fields and scarcity of water.
NOUN. The plant that comes out the most in the drought is the cactus.
Earthquaqe: An earthquake is a sudden and rapid shaking of the ground caused by the displacement of subterranean rocks far below the earth's surface.
NOUN. The earthquake is getting bigger.