The word “chief” can be defined as follows:
1. **Noun**: A leader or head of a group, organization, or entity; someone who holds the highest position or rank. For example, a chief of police is the head of a police department.
2. **Adjective**: Referring to something that is primary or most important. For example, a chief concern refers to the most significant issue or worry.
In both usages, “chief” conveys a sense of authority, importance, or primary status.
