ELI5: Explain Like I'm 5

Visual component library

A visual component library is like a big box of Lego pieces that people use to build things. In this case, the things people build are computer programs or apps. The components are like little pieces of code that have already been made by someone else, and they do a specific job, like displaying text or images, or allowing people to click buttons.

When people want to create a program, they can use these pre-made pieces as building blocks instead of creating everything from scratch, which can save time and be easier. Think of it like making a toy car - instead of building the whole car by hand, you can use pre-made wheels, a pre-made chassis, and pre-made seats.

The visual component library is like a big bin of all these pre-made components. Programmers can pick and choose which ones they need, and then put them together in a way that makes sense for the program they want to create. This way, they don't have to start from scratch and can make things more efficiently.
Related topics others have asked about: