I tried to cover as many terms pertaining to smartphones, tablets and Mobiles but if you think I am missing some thing or depicted wrong here please do let me know.
1) IPhone: is a type of Smartphone enriched with multimedia enabled objects along with touch screen option, first introduced in January 2007 by Apple Inc. Visit www.apple.com for more information
2) Android: owned by Google is a software that is designed for mobile devices especially smartphones. It is modified form of Linux kernel and bought by Google in 2005. Visit www.Android.com for more information.

3) iOS: Is an operating system used by Apple in their iPhones but later extended to other devices like Apple TV, iPad and iPod touch.

4) Smartphone: Much functionality of PDA and Phone merged in one device, that let you do various computer related tasks on hand held device, Apple iPhone and Android phone is best example in this regard.

5) Tablet: term was first floated by Microsoft in 2001 that let you the entire notebook functionality on hand held device with touch screen input interface. Apple iPad is best example in this regard that run on Apple iOS operating system.

6) Cydia: is software stack that let people to download Apps for free on Jailbroken iPhone. It is compatible only for Apple iOS based devices with Graphical interface run on APT and dpkg Package Management System.

7) Jailbreak: is used to unlock the limited functionalities on Apple iOS based devices. Then user can do whatever that was prevented by Apple on their devices.

Tethered Jailbreak: suppose you have Jailbreak your phone then every time you restart your device need a program that was used to jailbreak particular phone to boot your device again. iBooty application in this regard is fine example.

9) Untethered Jailbreak: where you don’t have to run the particular application every time to boot your device its opposite of Tethered Jailbreak

10) Baseband: its modem firmware that is used for accessing carrier network.

11) iPad: is tablet that is specifically designed to get all notebook functionalities on hand held device with touch screen.

12) Mac: is a computer operating system that is designed and market by Apple for their own Notebooks. Although you can use other operating system on Apple Mac Books but you can’t use Mac other that Mac PCs.

13) Windows: Microsoft has strong hold in computer operating systems and working for last many years. Their notable products are: Windows XP, Windows VISTA, and Windows 7. Visit www.microsoft.com for further detail.