gas station,service ~ petrol ~ filling ~ 有神马区别？解决思路

gas station,service ~, petrol ~, filling ~ 有神马区别？
I know American call 汽油gasoline, and UK call it petrol

so, gas station is for US, and petrol station is for UK ?

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petrol belongs car,gas belong pipe add into car?
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I think gas is "汽油", and petrol is "石油"