This is the 4837th most frequent Chinese word.
芝加哥
Chicago.
In this sentence, '芝加哥' functions as a proper noun referring to the city of Chicago.
我今年计划去芝加哥旅行。
I plan to travel to Chicago this year.
Here, '芝加哥' serves as a descriptor identifying the location whose winters are being described.
芝加哥的冬天通常非常寒冷。
Winters in Chicago are typically very cold.
In this example, '芝加哥' is used to specify the city where the mentioned buildings are located.