Metagalaxy is a term used in cosmology to describe a massive and vast group of galaxies that are held together by gravity. This term can also be described using various synonyms such as supercluster, galaxy filament, and galactic structure. Supercluster describes metagalaxy as a large group of clusters. Galaxy filament, on the other hand, describes the structure of these galaxies as long and narrow. Galactic structure refers to the organized and structured arrangement of these galaxies. Another synonym for metagalaxy is a cosmic web, which is used to describe the intricate network of galaxies that make up the universe. Regardless of the term used, metagalaxy and its synonyms all point to the vastness and complexity of the universe.