What is the difference between air duct and vent?

Related questions

1. How does HVAC work?
2. Is flexible ductwork vs rigid ductwork?
3. What is duct in HVAC system?
4. Should ductwork be replaced after 20 years?
5. Is it OK to cover air vents?
6. How do I know what size flex duct I need?
7. Can PVC pipe be used for HVAC duct?
8. Why is my room so hot compared to the rest of the house?
9. How does HVAC ducting work?
10. What is the best type of ductwork?

Tags

1. #heating
2. #ventilation
3. #supply
4. #system
5. #ducts
6. #multiple
7. #indoor
8. #building
9. #return
10. #heart
11. #conditioning
12. #needed
13. #veins
14. #arteries
15. #vents
16. #order
17. #enter
18. #handler