offend vs breach

offend is not a noun while breach is a noun.

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

As verbs, offend and breach are synonyms defined as:

offend and breach: act in disregard of laws, rules, contracts, or promises

Other synonyms of offend include break, go against, infract, transgress, violate.

offend (noun)	breach (noun)
	a failure to perform some promised act or obligation
	a personal or social separation (as between opposing factions)
	an opening (especially a gap in a dike or fortification)

offend (verb)	breach (verb)
hurt the feelings of	make an opening or gap in
cause to feel resentment or indignation	act in disregard of laws, rules, contracts, or promises
strike with disgust or revulsion
act in disregard of laws, rules, contracts, or promises