A lien is a legal RIGHT or CLAIM on a property by a creditor as security for a debt. A lien can be created in a variety of ways, such as when a person takes out a loan and pledges their property as collateral. The RIGHT to the property is then transferred to the creditor until the debt is paid off. The term 'lien' can also refer to the document that is used to create the lien. In this case, the crossword solutions are 'RIGHT', 'CLAIM', and 'MORTGAGE'. These terms all relate to the concept of a lien, as they refer to the RIGHT of a creditor to take possession of a debtor's property if the debt is not paid.