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No, this is the same thing.
Apparently, according to Wikipedia, the most common name in the world is a filling station:
A filling station that sells only electric energy is also known as a charging station, while a typical filling station can also be known as a fueling or gas station (United States and Canada), gasbar (Canada), gasoline stand or SS[Note 1] (Japan), petrol pump or petrol bunk (India, Pakistan and Bangladesh), garage, petrol station (Australia, Hong Kong, New Zealand, Singapore, South Africa, United Kingdom and Ireland), service station (Australia, France, Italy, Japan, New Zealand and United Kingdom and Ireland), servo (Australia), or fuel station (Northern Europe and Israel).
This is probably a naming preference/incosistency on the map.