Pathology: This concerned with the identification of different diseases, causative organs, their prevention and control methods. Pathology is a kind of study or diagnosis of disease. Pathology addresses four components of disease: first is cause/etiology, second is a mechanism of development that is pathogenesis, third is structural alterations of cells that is morphologic changes, and fourth is the consequences of changes called clinical manifestations. 

Pathology is further divided into divisions, based on either the system being studied like veterinary pathology or animal disease or the focus of the examination like as forensic pathology or determining the cause of death.