Answer:
In the United States, there are two main types of criminal law: substantive law and procedural law.
Substantive law refers to the actual laws that define crimes and establish the penalties for them. This includes federal and state statutes, as well as common law, which is law that has developed through judicial decisions over time.
Procedural law, on the other hand, refers to the rules and processes that govern the enforcement of substantive criminal law. This includes rules for arrest, search and seizure, interrogations, trials, and appeals.
In addition to these two main types of criminal law, there are also specialized areas of criminal law, such as juvenile justice, white-collar crime, and international criminal law.