Pharmacy is a practice based profession.
Pharmacology is a science and/or term used to described the study of medications and their effects on the body and vice versa.
Obviously a pharmacist can be a pharmacologist (often with appropriate research training (traditional or on the job), but a pharmacologist can not be a pharmacist unless he/she went to pharmacy school and passed the NAPLEX/MPJE.
Clinical pharmacology is just a means of applying knowledge at a molecular level to individuals. Often w/ more of an emphasis on kinetics, molecular activity, receptor polymorphisms, etc. Further a clinical pharmacologist is a broad term often used by many MDs, PharmDs, and/or PhDs who have been recognized w/ a specific knowledge about pharmacology.
Please see the following:
http://www.pharmcas.org/advisors/pharmacypharmacology.htm