province

/ˈprɑvɪns/
noun
  1. A principal administrative division of a country or region.
    • Canada is divided into ten provinces and three territories.
    • Each province has its own government and laws.
    • She was born in the province of Sichuan in China.
  2. An area of activity, knowledge, or responsibility.
    • As a teacher, her province is helping students learn, not disciplining them.
    • Deciding on the budget is not my province; that's the finance department's job.
    • The study of ancient languages falls within the province of linguistics.