Level: Basic
These two terms get used interchangeably constantly, but they describe genuinely different layers of a website.
UI Is What You See and Touch
User interface design covers the visual and interactive elements — buttons, colors, layout, typography — the tangible surface a person actually interacts with.
UX Is the Full Experience Around It
User experience covers the entire journey, including how easy something is to find, how it feels to complete a task, and whether the overall experience leaves someone satisfied.
A Site Can Have Strong UI and Weak UX, or Vice Versa
A beautifully designed interface built around a confusing flow still produces a poor experience, and a plain interface with a genuinely intuitive flow can outperform it.
Next step: Use the SeoWolf's Notepad to outline the distinct UI and UX priorities for your next project before design work begins.