UI / UX
A user interface (UI) is anything a user might interact with when using a digital product/service. From touch screens to desktop icons on your device.
User interface design focuses on appearance: the look of each element of the product—including buttons, text, images, check boxes, and any elements within the visual interface that the user interacts with.
The user experience (UX) reflects the way the user interacts with the company’s products and services. Taking into account the provision of effective solutions to the needs and expectations of the user in a smooth and simple way, by in-depth study of the user’s behavior to know what is the best for him.