Pharmacology
Pharmacology is not exactly the same as pharmacy, and a pharmacologist is not exactly the same as a pharmacist. A pharmacologist is a scientist who studies how medicine actually works, and usually works in a science lab.  A pharmacist is a health care provider who usually works at a pharmacy.  However, there is quite a bit of overlap between these two fields. A pharmacist could be considered a type of pharmacologist. Pharmacists do take many classes in pharmacology.