3 terms
AR, or augmented reality, overlays computer-generated content on a live view of the real world, aligned to real objects and updated in real time.
VR, or virtual reality, is an immersive technology that replaces the user's view of the physical world with a computer-generated, head-tracked environment.
XR, or extended reality, is the umbrella term for virtual, augmented and mixed reality, which blend digital content with the physical world in varying degrees.