What's the difference between a touchpad and touch input?

As far as I know, Touch pad is the thing come in laptop using which you can move your mouse cursor. While touch input is like touch screen where you can touch to explore something.

Touch pad is made for laptops and touch input are made for mobile devices.

touch pad is in laptops
touchinput is in mobiles

Touch input is a feature that enables a computer screen to respond to the touch of your finger. To use touch input, you must have specific hardware. If touch input is available on your computer, you can use your finger to move the pointer on the screen, select objects, and open files and folders. For more information about touch input,
http://windows.microsoft.com/en-IN/windows7/Whats-the-difference-between-a-touchpad-and-touch-input