From the description on that link I'd say they are about the same thing.

Have you considered seeing a physiotherapist about your hands, there are some specific exercises to strengthen hands (I was never very good at doing them though). The other culprit for hurting hands when doing repetitive things is carpel tunnel, which sadly requires surgery if it is the problem.

I hope you find some sort of answer, it is never fun to have hands that hurt, I've had to live with it for many years, it can be so frustrating.