👉 A chain is a collection of items that are related to each other. It can be made up of multiple items, such as a set of books or a group of friends. The word "chain" refers to the concept of grouping items together in order to achieve a particular purpose or outcome. In this context, chains could refer to any type of organization or structure, whether it's a family tree, a social network, or even a collection of objects that are related by common characteristics.
