A medicinal chemistry program includes rational drug design, combinatorial drug design, assays of drugs, natural product drugs and their isolation, drug metabolism, toxicology, peptide chemistry, perhaps prodrugs and/or topical drug delivery, and will be backed up by at least one graduate level organic chemistry course and spectroscopic analysis. Or at least I would think they would be.
I did not do a pharmacology program and can't say what's within the program. At the graduate level my only pharmacology class was molecular pharmacology, which was on how one conducts research into the mechanisms within cells of how drugs work. Perhaps there might have been a more general one as well, or more likely I did not have to do it due to undergraduate work.
Broadly speaking I understand pharmacology to include study of pharmacokinetics, uses of drugs, mechanisms within organs and the body, and toxicology, perhaps more.
Pharmaceutical sciences can be a broader category in which the above two are specialties. Whether a given university has it as its own specific category, I don't know.