Breach of fiduciary duty. The failure of a fiduciary duty to fulfill his duties with a high standard of care.

Breach of the peace. The criminal offense of provoking violence, creating a public disturbance, or engaging in public conduct that offends public morals or undermines public safety.

Breach of promise. A common law action for breaking off a marriage engagement.

Breach of trust. The breach by a trustee of the terms of a trust or of her general fiduciary duties.

Breach of warranty. A violation of an express or implied agreement or warranty relating to the title, quality, content, or condition of goods sold or of goods delivered to a bailee.