What is the difference between CF and SD cards?

Related questions

1. Are CF or SD cards faster?
2. What is the fastest CF card available?
3. Are CF cards still used?
4. What is a compact flash?
5. Is Compact Flash better than SD?
6. Are CF cards more reliable than SD?
7. Are CF cards better than SD?
8. Is CFast and compact flash the same?
9. Is SD faster than CF?
10. Is Compact Flash still used?

Tags

1. #support
2. #difference
3. #primary
4. #secure
5. #smaller
6. #digital
7. #forces
8. #based
9. #cameras
10. #compactflash
11. #factor
12. #favour
13. #earlier
14. #larger
15. #seriousness
16. #camera
17. #level