A limited-slip differential is a set of staggered gears that can divert more torque through the drive axle to the wheel that has more traction, thus limiting the amount of slippage a vehicle experiences driving on slick surfaces.
Torque-vectoring technology works differently, but its effect on the vehicle is similar.
Limited-slip differentials are standard in 4×4 vehicles, while torque vectoring is a crucial function of all-wheel drive.
See also: 4-Wheel Drive, 4×4, All-Wheel Drive