What is the use of namespace in XML?

Related questions

1. Is XML well formed?
2. What is the requirement of XML schema?
3. What is a valid document in XML?
4. What is XML Schema instance?
5. Why are XML files used?
6. What language is used for defining XML schema?
7. What is XML schema file?
8. What is XML DTD explain?
9. What are the three main types of XML documents?
10. What is XML document structure?

Tags

1. #names
2. #elements
3. #contain
4. #attribute
5. #attributes
6. #vocabulary
7. #named
8. #providing
9. #document
10. #namespaces
11. #recommendation
12. #defined
13. #uniquely
14. #element
15. #instance