What does "national capital region" mean?

The bi-provincial metropolitan region of the capital of Canada, Ottawa.

What is a synonym for "national capital region"?

Common synonyms include: ottawa.

name

name ·Rare ·Advanced level

Proper Noun

1
The bi-provincial metropolitan region of the capital of Canada, Ottawa.
2
The seat of government and one of three defined metropolitan areas in the Philippines.
3
A developmental planning area of India, including the National Capital Territory of Delhi and surrounding cities.

From national + capital + region. From being the region where the national capital is located.