A specified individual is a U.S. person who is required to file Form 8938. This includes U.S. citizens, resident aliens, and certain nonresident aliens. A partnership is a business entity that is not an individual, corporation, or trust. A corporation is a legal entity that is taxed separately from its owners. A trust is a legal arrangement where one party holds and manages assets on behalf of another party. Each entity type has different reporting requirements and forms for filing with the IRS.