breach
I think "breach" is usually used with "contract" or "agreement", something agreed upon between two parties.
Violation is usually used with "the law" or "regulations", something that applies to a more general population
https://gyazo.com/75b7b4f45ca14aba4565f4e6435b1950
source: [牙突で斎藤一が扉を破るGIF画像|無料GIF画像検索 GIFMAGAZINE 36773] noun
〖抽象的には不可算〗(規則・約束などの)違反, 不履行(violation); (信義などに)そむくこと, 裏切ること e.g. they alleged breach of copyright.
«…との/…の間の» 不和, 意見の不一致 «with/between»
e.g. a sudden breach between father and son.
【城壁・堤防などの】穴, 裂け目 «in» ; 突破口
verb with object
〈城壁・堤防など〉に穴を開ける, …を破る.
e.g. the river breached its bank.
〈クジラが〉ジャンプする
PHRASES
an act of breaking the terms set out in a contract:
e.g. I'm going to raise this as a breach of contract
e.g. the theater promptly sued him for breach of contract.
British an act of violent or noisy behavior that causes a public disturbance and is considered a criminal offense. the action of breaking a sworn assurance to do something, formerly especially to marry someone.
replace someone who is suddenly unable to do a job or task.
ORIGIN