The term "user interface" encompasses all the means and elements through which users interact with a software application or system. This includes visual elements, such as buttons, menus, and icons, as well as auditory and tactile feedback. A well-designed user interface (UI) improves usability by making applications intuitive and efficient to navigate. It considers aspects of user experience (UX), ensuring that interactions feel seamless and engaging. Effective UI design is critical for fostering user satisfaction and adoption of software products.