What is the difference between a laptop and an Ultrabook?

Related questions

1. Is Asus reliable laptop brand?
2. What is Ultrabook laptop?
3. Is Asus Zenbook good for programming?
4. What is an ultrabook laptop?
5. Does the Asus VivoBook have a backlit keyboard?
6. Is Asus Zenbook touch screen?
7. Is Asus laptop better than Lenovo?
8. Is Acer same as Asus?
9. Is a VivoBook a laptop?
10. Is Asus ZenBook 13 a touch screen?

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17. #netbooks
18. #called