the material for basketball
No. the college basketball is a little smaller and it is a little bit easier to grip.
The elasticity of the material that the basketball is made of will effect the strength of the bounce. The material's elasticity is the ability of the material to go back to it's original shape after being squashed, which happens when you bounce it. So when you bounce the basketball the material is squashed, the elasticity will force the ball back up by trying to go back to it's original shape, therefore creating the bounce.
leather, with traction for grip
The Basketball is made out of a material that allows he ball to bounce while keeping it light enough to carry and shoot.
high dense polymer fabric
Basketball is made with different materials that wont break for example a baketball hitting a backborad.
A volleyball, because it is made of material that will bounce well and is lighter than a basketball.