CATACLYSM (OR CATASTROPHE) (Noun)

Meaning- a sudden disaster or a violent event that causes bad change, for example a flood or a war

Synonym- DELUGE, UPHEAVAL

Uses-

•          A cataclysm such as second world war affects all countries.
•          Developing countries can’t survive the cataclysm of war.
•          An earthquake can cause a great cataclysm; especially, in densely populated area.
•          The summer cataclysm of hail and heavy rain further caused a cataclysm of flooding in the river bottoms.