What are understeer and oversteer?

Answer 1

Oversteer is a driving term used to describe the effect of the rear tyres of the car losing traction while turning a corner. This results in the back of the car sliding towards the outside of the corner and can result in a spin if not corrected by 'counter steering'.

Answer 2

understeer is when a vehicle tries to go straight on , common in front wheel drive cars when accelerating and turning at the same time

Oversteer is where the rear of the car slides out common when accelerating hard in a rear wheel drive