This is the 152nd most frequent Chinese word.
市
"市" means "city" or "market."
In this sentence, '市' is used to mean 'city' as part of an administrative division.
北京是中国的首都和一个直辖市。
Beijing is the capital of China and a directly governed city.
Here, '市' appears in the compound word '超市' (supermarket), emphasizing its usage in the context of a marketplace.
我今天要去超市买些日用品。
I’m going to the supermarket today to buy some daily necessities.
In this context, '市' signifies a city or urban area as part of an urban description.