A more thorough explanation:

Definition: Criminal is a term used to describe a person who has committed a crime or has been legally convicted of a crime. It can also refer to acts or people involved in or related to a crime.

For example, a "criminal conspiracy" is a plan to commit a crime, a "criminal taking" is the act of stealing, and a "criminal gang" is a group of people who commit crimes together.

In a legal sense, "criminal law" is a system of law that deals with cases involving a crime. A "criminal case" is when the government tries to punish a person for breaking the law, and "criminal procedure" refers to the rules a court follows during a criminal case.

Overall, the term criminal is used to describe illegal activity and those involved in it.

Examples:

• John was convicted of robbery and is now considered a criminal.
• The police arrested a group of individuals for their involvement in a criminal gang.
• The prosecutor is pursuing a criminal case against the suspect for breaking the law.

These examples illustrate how the term criminal is used to describe individuals who have committed a crime or are involved in illegal activity.