Fiduciaries are individuals or institutions that are legally bound to act in the best interests of another party, known as the beneficiary. Some synonyms for fiduciaries include trustees, guardians, agents, custodians, managers, stewards, and executors. Trustees are appointed to manage trusts, while guardians are responsible for managing the affairs of minors or individuals who are unable to manage their own affairs. Agents typically represent others in legal or financial matters. Custodians manage financial assets on behalf of others, while stewards tend to manage non-financial assets. Executors are responsible for overseeing the distribution of a deceased person's assets according to their will. All of these synonyms indicate a position of trust and responsibility.