What's the difference between HDMI and HDMI ARC?

Related questions

1. What does HDMI input look like?
2. What does HDMI port on TV look like?
3. Does my TV have HDMI ARC?
4. How do I tell if my TV is HD?
5. Can you use HDMI ARC as normal HDMI?
6. Can HDMI out be used as HDMI in?
7. How do I use HDMI on my Samsung TV?
8. What is best HDMI cable for 4k TV?
9. What is HDMI cable used for on TV?
10. Is there a difference between HDMI and HDMI ARC cable?

Tags

1. #audio
2. #needed
3. #connection
4. #between
5. #cable
6. #create
7. #theory
8. #sends
9. #cables
10. #supposed
11. #video
12. #whatever
13. #extra
14. #receiver
15. #optical
16. #sound