Although both the words have been used synonymously, I would like to know the underlying difference between the two.
If we consider the notion of intrinsic value we see that certain things such as joy and pain have intrinsic values whereas things such as money possess extrinsic value. Utility, on the other hand, considers the usefulness of things in general. Now it seems that things identified with extrinsic value might have utility ("You can use money to buy cars and therefore, it is valuable"), but can things with intrinsic value have utility. For instance, how can emotions be useful? Because if they were then they would not have intrinsic value in the first place. So, to me, it seems that things with intrinsic value will not have utility and thus, provides one difference between value and utility.