province
US /ˈprɑː.vɪns/
UK /ˈprɑː.vɪns/

1.
a principal administrative division of certain countries or empires.
:
•
Quebec is the largest province in Canada by area.
•
The Roman Empire was divided into many provinces.
2.
the whole of a country apart from the capital city.
:
•
Life in the provinces is often slower-paced than in the capital.
•
Many young people move from the provinces to the city for work.
3.
an area of activity or knowledge.
:
•
That's outside my province of expertise.
•
Teaching is within the province of the education department.