A Universe contains multiple supercluster complexes. Ours has 3 space dimensions (some have more, some less) and 1 time dimension. Multiple universes make up a multiverse. It was created at the Big Bang from ~ 14 billion years ago on most people's theory. Some may disagree, however. Our civilization has not discovered all of it yet. Although the multiverse theory is popular, so is another that says that the universe is infinite. If we live in a simulation, we live in a metaverse. A universe could be in any different verse that is the same level as the Multiverse, but it is most commonly in the multiverse.
The Universe is the smallest official verse. However, a few Universes contain things which contain Superclusters, leading many to redefine a Universe as a verse which is directly contained by the Multiverse.
Universe is part of Archverses
|Universe · Multiverse · Metaverse · Xenoverse · Hyperverse · Megaverse · Gigaverse · Teraverse · Petaverse · Exaverse · Zettaverse · Yottaverse · Xennaverse · Wekaverse · Extended Divergent Archverses · Archverse · Omniverse|