Well, nothing makes a difference we can say UI/UX designer or UI&UX designer because UI designer is different UX designer is different. They focus on different aspects UI designer basically works on how to design an eye feast website or web application whereas UX designer works on how to provide a smooth experience to the user while using their websites. This UI/UX designer has demand in the market. If you are interested to start in this field then I recommend you go for the Intellipaat UI UX design course.
For your reference, I am attaching this free UI/UX training video do check out this -