A will or testament is a legal document by which a person, the testator, expresses their wishes as to how their property is to be distributed at death, and names one or more persons, the executor, to manage the estate until its final distribution. For the devolution of property not disposed of by will, see inheritance and intestacy. Though it has at times been thought that a “will” was historically limited to real property while “testament” applies only to dispositions of personal property (thus giving rise to the popular title of the document as “Last Will and Testament”), the historical records show that the terms have been used interchangeably. Thus, the word “will” validly applies to both personal and real property. A will may also create a testamentary trust that is effective only after the death of the testator.