This is the 7639th most frequent Chinese word.
轮胎
Tires.
In this sentence, "轮胎" is used to refer to the physical tire of an automobile.
我的汽车轮胎需要更换了。
My car's tires need to be replaced.
Here, "轮胎" denotes a singular tire used creatively into another object, a swing, showing its versatility.
那个孩子用轮胎制成了一个秋千。
That child made a swing using a tire.
In this context, "轮胎" highlights the size differences between tires designed for different vehicles.