it’s really in the name, VR is a virtual reality and AR is aadding things to the real world

Augmented Reality :
Augmented reality is defined as “an enhanced version of reality created by the use of technology to add digital information on an image of something.”
AR is used in apps for smartphones and tablets. AR apps use your phone’s camera to show you a view of the real world in front of you, then put a layer of information, including text and/or images, on top of that view.
Apps can use AR for fun, such as the game Pokémon GO, or for information, such as the app Layar.
The Layar app can show you interesting information about places you visit, using augmented reality. Open the app when you are visiting a site and read information that appears in a layer over your view.

Virtual Reality :
Virtual reality may be artificial, such as an animated scene, or an actual place that has been photographed and included in a virtual reality app.
With virtual reality, you can move around and look in every direction – up, down, sideways and behind you, as if you were physically there.
You can view virtual reality through a special VR viewer, such as the Oculus Rift. Other virtual reality viewers use your phone and VR apps, such as Google Cardboard or Daydream View.
With virtual reality apps, you can explore places you have never been, such as the surface of Mars, the top of Mt. Everest, or areas deep under the sea. The New York Times has a virtual reality app that lets you experience virtual environments on Earth and other planets.

Google Earth also has a virtual reality app.