Are there any uses for Augmented Reality and Virtual Reality headsets other than video games?

I just found out the difference between Virtual Reality and Augmented Reality. Virtual Reality is 100% created by the computer, while Augmented Reality consists of selected virtual effects superimposed on the actual surroundings. Virtual Reality is somewhat easier to implement because it has no visual cues from the real world that may alert the user as to what is real and what is not.. See

https://www.imaginativeuniversal.com/blog/2015/09/09/why-augmented-reality-is-harder-than-virtual-reality/

Virtual and Augmented Reality may well be the next major development in high technology. Therefore, it is important to get familiar with both.

I have zero understanding of the usefulness of either in our world other than in playing sophisticated video games. I am hoping that some experts in the subject will volunteer to post some understandable summaries of the technology and its applications.