[rkangel]

UX (User Experience) is more about the process a user goes through. UI is more about the visual or physical elements a user interacts with.

For example, imagine you're designing about an online account creation flow.

The UX design would be deciding to identify people using email address, and then giving them the option of setting a password or logging in with a magic link to an email address[1].

UI would be about how you present that on screen. What is the layout? How do you make the two different choices clear, how do you indicate an invalid email address etc.

[1] Obviously there are other considerations here than UX such as security, but we're just talking about UX