apocalypse vs catastrophe

apocalypse and catastrophe both are nouns.

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

As nouns, catastrophe is a hypernym of apocalypse; that is, catastrophe is a word with a broader meaning than apocalypse:

apocalypse: a cosmic cataclysm in which God destroys the ruling powers of evil
catastrophe: an event resulting in great loss and misfortune

Other hypernyms of apocalypse include calamity, cataclysm, disaster, tragedy.

apocalypse (noun)	catastrophe (noun)
a cosmic cataclysm in which God destroys the ruling powers of evil	an event resulting in great loss and misfortune
	a sudden violent change in the earth's surface
	a state of extreme (usually irremediable) ruin and misfortune