This is the 8201st most frequent Japanese word.
左側
"Left side."
Here, "左側" is employed to describe the position of the flower bed in relation to the park as a whole.
公園の左側には花壇があります。
There is a flower bed on the left side of the park.
In this sentence, "左側" is used to specify the location of the seat relative to the speaker.
私は左側の席に座ります。
I will sit in the seat on the left side.
In this example, "左側" is used to inquire about the items or objects positioned to the person's left side.