What's the difference between an ebook and a PDF?

Related questions

1. Are Kindle books cheap?
2. Are ebook readers dead?
3. Is it worth buying a Kindle?
4. How do ebook readers work?
5. Are Kindle books expensive?
6. Why are ebooks more expensive than Kindle?
7. Why do ebooks cost as much as paperbacks?
8. Is abebooks owned by Amazon?
9. Can Kindle read other ebook formats?
10. Why are books so expensive in USA?

Tags

1. #printed
2. #because
3. #easily
4. #instead
5. #device
6. #objects
7. #difference
8. #built
9. #based