What is the proper noun for province?

There isn't a single proper noun that works for "province" as it depends on the specific province you're referring to.

Here's why:

* Province is a common noun: It describes a general type of administrative division within a country.

* Proper nouns are specific names: They identify unique people, places, or things.

Examples:

* Canada: Alberta, British Columbia, Manitoba, etc.

* China: Sichuan, Guangdong, Jiangsu, etc.

* Italy: Sicily, Sardinia, Lombardy, etc.

To use the correct proper noun, you need to specify the country and the specific province you're talking about.