The term used for a "guest" varies widely depending on the industry and the level of formality. In the hospitality sector (hotels and resorts), they are simply called Guests or occasionally Patrons. In professional services like law or consulting, they are referred to as Clients, while in retail, they are Customers. In the medical field, a guest is a Patient. On cruise ships and airlines, they are specifically Passengers. In traditional or older contexts, such as a boarding house, they might be called a Lodger or a Boarder. In the world of high-end events or private clubs, the term Invitee or Member is often used. Some modern service industries, like Disney or high-end tech support, use the term Guest as a way to imply a more hospitable, personal relationship than the transactional "Customer." In legal terms, particularly regarding property and liability, a guest might be classified as an Invitee or a Licensee depending on whether their presence provides a benefit to the owner.