As a noun, a fiduciary is an executor, trustee, and agent under a power of attorney. It may be colloquially understood as someone who manages property or money for someone else. Fiduciary may also be used as an adjective as in, “fiduciary duty” – to describe the legal and/or contractual nature of a relationship. In the context of describing a duty, the Consumer Financial Protection Bureau states that this includes four primary mandates: