catastrophe vs cataclysm

catastrophe and cataclysm both are nouns.

Word	Noun	Adjective	Verb	Adverb
catastrophe	Yes	No	No	No
cataclysm	Yes	No	No	No

As nouns, catastrophe and cataclysm are synonyms defined as:

catastrophe and cataclysm: an event resulting in great loss and misfortune

Other synonyms of catastrophe include calamity, disaster, tragedy.

As nouns, catastrophe and cataclysm are synonyms defined as:

catastrophe and cataclysm: a sudden violent change in the earth's surface

catastrophe (noun)	cataclysm (noun)
an event resulting in great loss and misfortune	an event resulting in great loss and misfortune
a sudden violent change in the earth's surface	a sudden violent change in the earth's surface
a state of extreme (usually irremediable) ruin and misfortune