coal oil vs kerosene

coal oil and kerosene both are nouns.

Word	Noun	Adjective	Verb	Adverb
coal oil	Yes	No	No	No
kerosene	Yes	No	No	No

As nouns, coal oil and kerosene are synonyms defined as:

coal oil and kerosene: a flammable hydrocarbon oil used as fuel in lamps and heaters

Other synonyms of coal oil include kerosine, lamp oil.

coal oil (noun)	kerosene (noun)
a flammable hydrocarbon oil used as fuel in lamps and heaters	a flammable hydrocarbon oil used as fuel in lamps and heaters