Many types of UX
UX research is the study of how people behave and experience a product – before, during, and after they interact with it.
UX design is the design of user experiences, which means you’ll take the research further by actually creating something – usually a product
Service design – when you are designing a service rather than a product. It mostly involves generative UX research, i.e. investigating people’s problems, and then designing a solution for those problems.
UI/UX (or UX/UI) – implies the combination of UX practices and User Interface design. When people think of UI they mostly talk about GUIs (graphical user interfaces), such as a mobile app or website’s screen, but other increasingly popular forms of interaction may also be taken into account, e.g. VUIs (voice user interfaces).