trackball

As a noun trackball

is (computing) a pointing device consisting of a ball housed in a socket.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between trackball and touchpads

is that trackball is (computing) a pointing device consisting of a ball housed in a socket while touchpads is .

As nouns the difference between keyboard and trackball

is that keyboard is a set of keys used to operate a typewriter, computer etc while trackball is a pointing device consisting of a ball housed in a socket.

As a verb keyboard

is to type on a computer keyboard.

Trackball is a coordinate term of trackpad.

As nouns the difference between trackpad and trackball

is that trackpad is touchpad while trackball is a pointing device consisting of a ball housed in a socket.

As nouns the difference between taxonomy and trackball

is that taxonomy is the science or the technique used to make a classification while trackball is (computing) a pointing device consisting of a ball housed in a socket.

In computing terms the difference between trackball and rollerball

is that trackball is a pointing device consisting of a ball housed in a socket while rollerball is a trackball.