This is the 2146th most frequent Chinese word.
广
Wide; broad.
In this sentence, '广' is part of the word '广场' which means 'square.' It contributes the meaning of 'wide' or 'spacious'.
这座城市的广场非常大。
The square in this city is very large.
Here, '广' is used in the context '广受欢迎', meaning 'widely popular.' '广' indicates 'wide' or 'extensive' popularity.
出版社发行了广受欢迎的书籍。
The publishing house released a book that is widely popular.
In this example, '广' appears in '广泛', which means 'extensive' or 'wide-ranging.' It denotes a comprehensive scope or breadth.