This is the 5348th most frequent Japanese word.
nankang
The word "nankang" does not appear to be a standard Japanese word. It might be a name, brand, or misspelling.
In this sentence, '南閑' (Nankang) refers to a proper noun, most likely a geographical area in Japan. It utilizes its context as a location name and its meaning isn't dissected further as it's a name.
南閑地区は自然が美しい場所です。
The Nankang area is a place with beautiful nature.
Here, '南閑市' (Nankang city) again refers to a specific location. It demonstrates usage as part of a larger compound noun indicating a place (city).
大会は南閑市で開催されます。
The tournament will be held in Nankang city.
This instance shows '南閑県' (Nankang prefecture), clearly marking it as referring to a region or administrative division and emphasizing geographic and personal connections.