Out-buildings are additional structures or buildings located outside of the main building or house. These can be sheds, storage buildings, barns, garages, or any other structure that is added to the main building. There are several synonyms for the word 'out-building' that can be used depending on the type of building, its purpose or location. These include annex, extension, lean-to, addition, cabana, man cave, barnyard, outhouse, carriage house, workshop, guest house, tool shed, and stable. Each of these synonyms can be used to describe a specific type of out-building, and it is essential to choose the most appropriate word when describing a particular structure.