UI means user interface: the menus, buttons, fields, and other elements someone interacts with. UX means user experience: what it is like to move through the website and accomplish a task. You can understand the difference by trying to send a simple inquiry.
Look at the interface.
The form has labels, fields, a button, and feedback. Are the labels readable? Is it clear which details are required? Can the button be reached and used with a keyboard? These are concrete interface questions.
Visual consistency also matters. A control should behave the way its appearance suggests.
Follow the complete experience.
The visitor first needs to find the form, understand why they should use it, and know what to include. After submission, they need a clear confirmation. The business needs the message to reach a place where it can be reviewed.
That larger path is the experience. A beautiful submit button cannot solve an unclear request or a lost message.
Review both with realistic tasks.
Ask someone to find a service and inquire about a plausible project. Watch where they hesitate and verify the resulting record. Try the same path on a phone.
Use the findings to improve the actual point of confusion. Sometimes that means changing a control; sometimes it means rewriting the explanation or removing an unnecessary step. The terminology is useful when it helps the team discuss the work, but the visitor benefits from the finished path being clear.





