computer user vs worker

computer user and worker both are nouns.

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

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

computer user: a person who uses computers for work or entertainment or communication or business
worker: a person who acts and gets things done

Other hypernyms of computer user include actor, doer.

computer user (noun)	worker (noun)
a person who uses computers for work or entertainment or communication or business	sterile member of a colony of social insects that forages for food and cares for the larvae
	a person who works at a specific occupation
	a member of the working class (not necessarily employed)
	a person who acts and gets things done