For many people, the word “design” is associated with creativity, colors and graphics, when really its true definition lies in functionality, as well as the process behind making products that provide a seamless experience for the people who use them. UX design esnsures all these activities. Besides, creating a great UI is a challenge, specially because it has to be intuitive.
If either one of UI or UX is poor, the user senses an inferior product. Which means, both UI and UX need to more than just great individually. It’s only when they blend together seamlessly and by extension the products become great.