petrol vs gasolene

petrol and gasolene both are nouns.

Word	Noun	Adjective	Verb	Adverb
petrol	Yes	No	No	No
gasolene	Yes	No	No	No

As nouns, petrol and gasolene are synonyms defined as:

petrol and gasolene: a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines

Other synonyms of petrol include gas, gasoline.

petrol (noun)	gasolene (noun)
a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines	a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines