etna vs gas jet

etna and gas jet both are nouns.

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

As nouns, gas jet is a hypernym of etna; that is, gas jet is a word with a broader meaning than etna:

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

Other hypernyms of etna include gas burner.

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