Android, UI styling and padding and text standards, what is it called?

Question

Android

I often hear in videos, when typing or creating indents, they say - we make such indents everywhere, or text, because there are design standards, something like that, I googled and found only material design, which talked about shadows, for the concept of the location of the element, floating bar, floating action menu, effects when clicking on buttons, etc., but where what indents, what fonts to use, there was no such thing.

Answer 1

https://material.io/design/layout/spacing-methods....

Answer 2

UI/UX design.

Answer 3

https://developer.android.com/design
Material design is now officially recommended.
https://developer.apple.com/design/human-interface...
Apple has the abbreviation for this HIG - Human Interface Guidelines
The right place in the description material design
https://material.io/design/layout/spacing-methods. ...