A scaler type is a simple number in one dimension(representing the variable in single dimension).

eg: double i ;

A vector type is the representation of a type in more than onedimension.

eg:

struct vector

{

public double x,y,z;

public vector(double x,double y,doublez)

   {

        this.x=x;

        this.y=y;

        this.z=z;

   }

} 

.........I think so

I believe it's merely that scalar types are singular, vector types are multiple (collections, tuples).