What is a near arm cartwheel?

Near Arm cartwheel refers to a ONE ARM cartwheel where the arm used matches the "first" arm (aka: arm nearest to take off foot), used in performing a regular cartwheel.

Understanding the opposite will help clarify

Far Arm cartwheel refers to a ONE ARM cartwheel where the arm used matches the "second" (aka furthest away) arm used in performing a regular cartwheel. This one arm cartwheel is an ExcelLENT tool to evaluate the efficiency of a tumbler, particularly support/push phase of a round off.