Text is the important part of the interface

Does not matter what canvas is used: web page, mobile or desktop screen or paper – the user interface is what allows people to interact with a service or app. To make sense of the UI we use text.

user interface with and without text

The text is everywhere in interfaces. Without it, the users fail to understand how to use the UI. Thus to make UI work go with clear messages, suitable typography, legible fonts and clear language.