The term 'Arbour' is a type of garden structure, often made of wood or metal, and can be used for a variety of purposes. Two other terms that are related to Arbour are BOWER (5 letters) and PERGOLA (7 letters). A BOWER is a type of arbour that is usually covered with climbing plants, while a PERGOLA is an arbour that is supported by columns and has an open roof. Both BOWER and PERGOLA are used to provide shade and shelter in gardens.