Important Task
Great Duty, Important Role
noun
たいやく
役 (やく) Role, Part, Duty, Service
役割 (やくわり) Role
役目 (やくめ) Duty, Business, Role
大役 (たいやく) Important Task, Great Duty, Important Role
任務 (にんむ) Duty, Task, Mission
義務 (ぎむ) Obligation, Duty
奉仕 (ほうし) Attendance, Service, Ministry
奉公 (ほうこう) Service, Apprenticeship, Public Duty
An Important Task 大役 is a big 大 service 役