cybernaut vs computer user

cybernaut and computer user both are nouns.

Word	Noun	Adjective	Verb	Adverb
cybernaut	Yes	No	No	No
computer user	Yes	No	No	No

As nouns, computer user is a hypernym of cybernaut; that is, computer user is a word with a broader meaning than cybernaut:

cybernaut: a computer user who uses the internet; someone who explores cyberspace
computer user: a person who uses computers for work or entertainment or communication or business

cybernaut (noun)	computer user (noun)
a computer user who uses the internet; someone who explores cyberspace	a person who uses computers for work or entertainment or communication or business