What is the difference that might exist?

The difference in electrical potential between two places in a circuit is referred to as a potential difference.

The labor done to transport a unit charge from one location to the other is the electric potential difference between two points in an electric circuit carrying some current.

The volt, abbreviated V, is the standard metric unit of electric potential difference.

The work done per unit charge is sometimes referred to as the potential difference.

V = W$/$Q

Here V Potential difference, W is Work done, and Q is electric charge.

The S.I unit of work is joule and that of the charge is the coulomb.