A power of attorney concerning safe custody refers to a legal document that grants an individual the authority to take care of someone's affairs related to safekeeping. Synonyms for this term include conservatorship, guardianship, or trusteeship. These words describe the legal responsibility that a person may have to manage another's assets, finances, and property to ensure their safety and security. Guardianship specifically refers to the care and management of an individual who may not have the ability to manage their own affairs due to age or disability. Trusteeship describes the responsibility of overseeing and managing a trust created by someone to protect assets or provide for a beneficiary.