User interface (UI)
A user interface is the method by which a person interacts with a computer.
In screen-based interfaces such as a smartphone or laptop, the user interface, or UI for short, includes all of the content and visuals that make up a digital experience, from the layout to the buttons, paragraphs of text to more complex interactions like forms, carousels, or interactive animations.
Considerate of other ways a person may interact with a computer, even screen-based interfaces include alternative user interfaces through screen readers and voice interactions.
Other examples of user interfaces include voice assistants, where there is minimal or even no screen, or any other number of smart objects such as watches, fridges, thermostats, and more, which include some method of interaction.