This is the 7590th most frequent Chinese word.
费城
Philadelphia.
Here, '费城' refers to the city of Philadelphia as a specific location or subject.
费城是一座美丽的城市。
Philadelphia is a beautiful city.
In this context, '费城' signifies the destination of travel being described.
我计划今年夏天去费城旅游。
I plan to travel to Philadelphia this summer.
Here, '费城' refers to Philadelphia as the possessor of a rich historical heritage.