A crime is an act (or transgression or omission) that is in breach of the law, usually because it endangers or aggrieves individuals or society.
Justice is the principal of balance and fairness brought to bear in the process of evaluating human behaviour and interaction. Thus it is closely associated with crime.
Criminal Justice is society's response to crime. While it often has the effect of balancing or redressing the negative effects of crime, its full range of operations, criminal justice also functions to prevent crime and promote community safety.
CRIMINAL JUSTICE SYSTEM
The criminal justice system consists of State and Commonwealth institutions, agencies, departments, and personnel responsible for dealing with the justice aspects of crime, victims of crime, persons accused of committing a crime, and other related issues and processes.