A more thorough explanation:

Definition: Excambion is a term used in Scots law to refer to the exchange of one piece of property for another, particularly in the case of heritable estates.

Example: John and Mary decide to exchange their properties. John owns a house in Edinburgh, while Mary owns a farm in the countryside. They agree to an excambion, where John will give his house to Mary in exchange for her farm.

Explanation: This example illustrates the concept of excambion, where two parties exchange their properties. In this case, John and Mary are exchanging their heritable estates, which means that the properties are passed down through generations. The excambion allows them to acquire properties that better suit their needs or preferences.