The word ‘criminal’ can be defined as follows:
1. **Adjective**: Relating to or involving crime; unlawful. It describes actions, behaviors, or activities that violate the law.
2. **Noun**: A person who has committed a crime or engaged in illegal activities. This refers to someone found guilty of breaking the law.
In summary, ‘criminal’ pertains to acts against the law and to individuals who engage in such acts.