catastrophe vs disaster

catastrophe and disaster both are nouns.

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

As nouns, catastrophe and disaster are synonyms defined as:

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

Other synonyms of catastrophe include calamity, cataclysm, tragedy.

As nouns, catastrophe and disaster are synonyms defined as:

catastrophe and disaster: a state of extreme (usually irremediable) ruin and misfortune

catastrophe (noun)	disaster (noun)
an event resulting in great loss and misfortune	an act that has disastrous consequences
a sudden violent change in the earth's surface	an event resulting in great loss and misfortune
a state of extreme (usually irremediable) ruin and misfortune	a state of extreme (usually irremediable) ruin and misfortune