"Modular" refers to a design approach where a system is composed of separate, interchangeable components or modules. This allows for flexibility, as individual parts can be added, removed, or replaced without affecting the entire system. For example, in modular furniture, pieces can be rearranged or combined in various ways to fit different spaces and needs. In technology, modular programming enables developers to create software in distinct sections, making it easier to manage and update. This method promotes efficiency and collaboration, as different teams can work on separate modules simultaneously. Overall, modularity enhances adaptability and simplifies maintenance across various fields.