kerosene heater vs oilstove

kerosene heater and oilstove both are nouns.

Word	Noun	Adjective	Verb	Adverb
kerosene heater	Yes	No	No	No
oilstove	Yes	No	No	No

As nouns, kerosene heater and oilstove are synonyms defined as:

kerosene heater and oilstove: heater that burns oil (as kerosine) for heating or cooking

Other synonyms of kerosene heater include kerosine heater, oil heater.

kerosene heater (noun)	oilstove (noun)
heater that burns oil (as kerosine) for heating or cooking	heater that burns oil (as kerosine) for heating or cooking