Is Docker hub a registry?

Related questions

1. What is the difference between Docker hub and Docker registry?
2. What is Docker AUFS?
3. What is a docker hub?
4. What is Docker webnet?
5. What is Yaml file in Docker?
6. What are the types of Docker networks?
7. What is Docker overlay network?
8. What is overlay2 Docker?
9. Where are Docker layers stored?
10. Is Docker a virtualization?

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