force majeure vs cataclysm

force majeure and cataclysm both are nouns.

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

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

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

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

force majeure (noun)	cataclysm (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