gas burner vs etna

gas burner and etna both are nouns.

Word	Noun	Adjective	Verb	Adverb
gas burner	Yes	No	No	No
etna	Yes	No	No	No

As nouns, etna is a hyponym of gas burner; that is, etna is a word with a more specific, narrower meaning than gas burner:

gas burner: burner such that combustible gas issues from a nozzle to form a steady flame
etna: a gas burner used in laboratories; has an air valve to regulate the mixture of gas and air

Other hyponyms of gas burner include bunsen, bunsen burner, gas ring, pilot, pilot burner, pilot light.

gas burner (noun)	etna (noun)
burner such that combustible gas issues from a nozzle to form a steady flame	a gas burner used in laboratories; has an air valve to regulate the mixture of gas and air