This is the 284th most frequent Japanese word.
区
"区" (ku) means "ward" or "district" in English.
In this sentence, '区' designates a special ward or administrative district in a city, specifically in Tokyo.
私は東京の中央区に住んでいます。
I live in Chuo Ward of Tokyo.
Here, '区' refers to divisions or sections within a smaller area like a village.
その村は3つの区に分かれています。
The village is divided into three districts.
In this context, '区' is part of the compound '区別', meaning 'distinction', emphasizing differentiation.