whole area; entire region
Refers to a broad, continuous geographical area as a whole. Often used with place names or in descriptions of regions.
Heavy rain fell across the entire Kanto region.
noun, noun which may take the genitive case particle 'no'
Used for a defined stretch of land, often with a specific characteristic (e.g., residential belt, industrial zone). Can be used with 'no' to modify nouns.
This stretch of land has become a residential area.
The scenery of the zone lined with factories.
Heavy rain fell across the entire Kanto region.
I heard this whole area used to be rice fields.
Smoke from the fire spread across the whole area.
A thick fog covered the whole area.
The residential belt is quiet and calm.