Pharmacy

There's barely any difference in the first two years of these two courses. But eventually Pharmaceutical Science will branch out into chemical synthesis focused departments whereas medical Science deals with anatomy and immunology. However, to be a good physician or a pharmacist, one needs to have knowledge which overlaps tremendously in both domains.

Earlier in history there want much difference between these two and they were barely considered separate branches. But presently, a physician's focus is the surgery, a pharmacist does not delve into the surgical aspect of the body.

As for which is better, both are necessary and both are parts of medicine. I doubt a pharmacist is of use without a physician to diagnose an ailment and I doubt a physician is any good without a drug to treat the diagnosed problem. Also you can't do much in either of these courses if you have no intention of eventually specializing and that is when you will realize how indispensable they're to each other.