What are UI primitives

Question

What are UI primitives?

if you find yourself wishing that you had a different set of UI primitives to work with, you just invent new ones. [https://facebook.github.io/react-native/docs/props.html]

Answer 1

The building blocks of your UI. Lets take html as an example: div, span, form etc are UI primitives, a div containing a span and a form is not a primitive. But, if you often need the structure "div containing span and form" you can use react to turn it into a primitive and just use it