force majeure vs catastrophe

force majeure and catastrophe both are nouns.

Word	Noun	Adjective	Verb	Adverb
force majeure	Yes	No	No	No
catastrophe	Yes	No	No	No

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

force majeure: a natural and unavoidable catastrophe that interrupts the expected course of events
catastrophe: an event resulting in great loss and misfortune

Other hypernyms of force majeure include calamity, cataclysm, disaster, tragedy.

force majeure (noun)	catastrophe (noun)
a natural and unavoidable catastrophe that interrupts the expected course of events	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