question over car balance

[icef1mkd]

mates, sometimes I really got confused mixing the correct meaning of the terms "set-up" and "balance".
I know what car setting means and I understand when a driver complains about a certain parameter wrongly setted.

but I get confused when a driver complains over the balance!
what does that actually mean? if the balance is wrong, then what's actually wrong with the car?

thanks

[vis]

Balance is the general behaviour of the car during cornering (or braking). We can say that a car is balanced when it has no oversteer nor understeer,
or at least has something of the two when the driver wants.

[pyry]

ive understood it generally speaking means the differencein behaviour in differing circumstances; for example if it understeers in slow corners but oversteers in fast corners... when the behaviour of the car isnt predictable.