severance vs rupture

severance and rupture both are nouns.

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

As nouns, severance and rupture are synonyms defined as:

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

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

severance (noun)	rupture (noun)
the act of severing	the act of making a sudden noisy break
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

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