1. the parts played by actors in movies, plays, or other performances
2. the functions or positions that people have in particular situations, organizations, or relationships
3. the degrees of importance or influence that things have in particular situations

Examples

• She has played many different roles in her acting career.
• The lead roles in the movie were given to famous actors.
• Parents and teachers have important roles in children’s education.
• What are your roles and responsibilities in this project?
• Technology plays key roles in modern business.
• The roles of government have expanded over time.
• He struggled to balance his roles as father and businessman.