Criminal justice or criminology

What are the 6 major areas of criminology.
Knowledge, skills, attitudes and values essential to the practice of Criminology in the fields of Criminalistics, Law Enforcement Administration , Criminal Sociology, Criminal Law and Procedure, Correctional Administration, Ethics and Community Relations and, Defensive Tactics.

While criminology is the study of crimes, criminal justice on the other hand deals with the system in which the ones who have committed crimes must be punished.
Students who study criminal study about law enforcement while students who study criminology will study the behavior and background of the criminals and look into the impact of the crime.