terminology – How do you call the user interface of your product?

How do you call the user interface of your digital product within your team (in your design language)? or pensions belong to them. Is there a standard or best practice?

In our case, the product includes various parts, such as front-end, back-end, core (C C ++), etc.

I am asking this question because it is a UX problem to deal with this and to have the team use the same terms to designate the same parts of the project.

Some of the options I've heard are:

  • Web user interface
  • User interface or user interface
  • Graphic interface
  • Console
  • Interface
  • The front end