What is standard error in Linux?

Related questions

1. What is the return value of printf and scanf?
2. What is redirection error?
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4. Why & is used in Scanf and not in printf?
5. What is a Python interpreter?
6. What is stdout and stderr?
7. What are printf and scanf?
8. Is stderr buffered?
9. What does stdout mean?
10. What is the difference between printf and scanf?

Tags

1. #syntax
2. #symbol
3. #system
4. #errors
5. #monitor
6. #error
7. #denoted
8. #default
9. #stderr
10. #standard
11. #screen
12. #output
13. #messages
14. #redirection
15. #write
16. #number
17. #device
18. #known
19. #which
20. #command
21. #input