Property interest is a broad term that refers to any legal or financial interest in real or personal property. There are many synonyms for this phrase, including ownership interest, equitable interest, possessory interest, and vested interest. Each of these terms refers to a different aspect of property ownership and possession, and may be used in legal or financial documents to describe the nature and scope of a particular interest in property. Other related terms and synonyms include stake, claim, title, deed, leasehold, and mortgage, which all describe different aspects of property rights, ownership, and use. Understanding these synonyms can help you navigate the complex world of property law and finance.