Hi,
Those are two different things.
And "precision" is the third, that often causes confusion.
Let´s say you have a DVM.
* Resolution is the step size you can detect. Lets say you have a 10.000V reference voltage source: your DVM show "9.97" Volts. Then it has 0.01V resolution. (you can not detect 0.005V for example)
* Accuracy is how close you are to the "real" value. Lets say you have a 10.000V reference voltage source: your DVM show "9.97" Volts. It is 0.03V OFF. This 0.03V is an accuracy issue.
* Precision: Means repeatability. Lets say you have a 10.000V reference voltage source: you measure the value on five days. Once each day.. The results are: 9.97, 9.97, 9.98, 9.96, 9.97, then the repeatability = precision = +/-0.1V.
Klaus