rift vs breach

rift and breach both are nouns.

Word	Noun	Adjective	Verb	Adverb
rift	Yes	No	No	No
breach	Yes	No	Yes	No

As nouns, rift and breach are synonyms defined as:

rift and breach: a personal or social separation (as between opposing factions)

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

rift (noun)	breach (noun)
a personal or social separation (as between opposing factions)	a failure to perform some promised act or obligation
a narrow fissure in rock	a personal or social separation (as between opposing factions)
a gap between cloud masses	an opening (especially a gap in a dike or fortification)

rift (verb)	breach (verb)
	make an opening or gap in
	act in disregard of laws, rules, contracts, or promises