rupture vs severance

rupture and severance both are nouns.

Word	Noun	Adjective	Verb	Adverb
rupture	Yes	No	Yes	No
severance	Yes	No	No	No

As nouns, rupture and severance are synonyms defined as:

rupture and severance: a personal or social separation (as between opposing factions)

Other synonyms of rupture include breach, break, falling out, rift.

rupture (noun)	severance (noun)
the act of making a sudden noisy break	the act of severing
a personal or social separation (as between opposing factions)	a personal or social separation (as between opposing factions)
state of being torn or burst open

rupture (verb)	severance (verb)
separate or cause to separate abruptly