In many countries there is a single registry although in others, such as Spain and Germany, multiple registries exist. A Legal Entity is able to trade, is legally liable for its actions, accounts, tax affairs etc.
This makes legal entities distinct from the concept of organisations, groups or sole traders. Many organisations exist that are not legal entities; yet to the outside world they have staff, hierarchies, locations etc. Other organisations exist that are an umbrella for several legal entities (universities are often good examples of this). This vocabulary is concerned solely with registered legal entities and does not attempt to cover all possible trading bodies.