What is the difference between Abstract Factory Pattern And Builder Pattern

 
 Hİ,

   I think that you discussed this quesiton before. But I couldnot find is there topic like this question on here

      I wrote a car factory with abstract factory pattern. I have 2  factory  ( MercedesFactory,HondaFactory) and i have 4 concrete class (MercedesFamilyCar,MercedesSportCar,HondaFamilyCar,HondaSportCar ) .I have a abstract classess  Family and Sport which includes
 below methods.    
        public abstract void Speed();
        public abstract void Wheel();
        public abstract void Door();
        public abstract void Price();
        public abstract void Display();

So my question is i can do this with builder pattern. Assume that its name is CarBuilder instead of CarFactory. What is the main difference between  Builder and Abstract Factory Pattern.

 Thanks.

 Best Regards.