Arbours are beautiful outdoor structures that add a touch of elegance to gardens and landscapes. Synonyms for the word "arbours" include: pergolas, gazebos, arches, trellises, and canopies. Pergolas are usually made of wood and have an open roof with beams and rafters. Gazebos are similar to pergolas but have a complete roof and are often octagonal or hexagonal in shape. Arches are usually curved structures that provide an entrance to a garden or pathway. Trellises are lattice structures used to support climbing plants and provide shade. Canopies are often made of fabric and provide a covered outdoor area. All of these synonyms offer different options for creating a beautiful outdoor living space.