administrator — An administrator is a person whose job involves helping to organize and supervise the way that an organization or institution functions.
agent — A chemical that has a particular effect or is used for a particular purpose can be referred to as a particular kind of agent.
custodian — The custodian of an official building, a companies' assets, or something else valuable is the person who is officially in charge of it.
executor — A person or institution appointed by a testator to carry out the terms of their will.
fiduciary — Law. a person to whom property or power is entrusted for the benefit of another.
guardian — a person who guards, protects, or preserves.
keeper — a person who guards or watches, as at a prison or gate.
warden — any of several pears having a crisp, firm flesh, used in cookery.
trustee — a person, usually one of a body of persons, appointed to administer the affairs of a company, institution, etc.
