What is the difference between a domain and a subdomain?

Related questions

1. What does .xyz mean in a Web address?
2. Why do you need a subdomain?
3. What are fly pants?
4. Why do pants have zippers?
5. Why do girls jeans have chains?
6. Is domain squatting illegal?
7. Why do they call a pants zipper a fly?
8. What is a French fly on men's pants?
9. What does zip fly mean?
10. What are the zippers on sweatpants for?

Tags

1. #which
2. #between
3. #domain
4. #necessary
5. #unaffected
6. #standalone
7. #subdomain
8. #works
9. #difference
10. #basic