petrol pump vs gasoline pump

petrol pump and gasoline pump both are nouns.

Word	Noun	Adjective	Verb	Adverb
petrol pump	Yes	No	No	No
gasoline pump	Yes	No	No	No

As nouns, petrol pump and gasoline pump are synonyms defined as:

petrol pump and gasoline pump: a pump in a service station that draws gasoline from underground storage tanks

Other synonyms of petrol pump include gas pump, island dispenser.

petrol pump (noun)	gasoline pump (noun)
a pump in a service station that draws gasoline from underground storage tanks	a pump in a service station that draws gasoline from underground storage tanks