etiquette vs netiquette

etiquette and netiquette both are nouns.

Word	Noun	Adjective	Verb	Adverb
etiquette	Yes	No	No	No
netiquette	Yes	No	No	No

As nouns, netiquette is a hyponym of etiquette; that is, netiquette is a word with a more specific, narrower meaning than etiquette:

etiquette: rules governing socially acceptable behavior
netiquette: Etiquette practiced or advocated in electronic communication over a computer network.

Other hyponyms of etiquette include protocol, punctilio.

etiquette (noun)	netiquette (noun)
rules governing socially acceptable behavior	Etiquette practiced or advocated in electronic communication over a computer network.