This is the 3712th most frequent Chinese word.
西边
West side.
Here, '西边' denotes the geographic west side of a location, specifying the relative position of the speaker's home within the city.
我家在城市的西边。
My home is in the west of the city.
In this sentence, '西边' refers to the west direction in general, used to describe the natural phenomenon of the sun setting.
太阳从东边升起，在西边落下。
The sun rises in the east and sets in the west.
'西边' is used here to specify the location of the park relative to the speaker's reference, indicating the park is situated in the west part of an area.