technologist vs worker

technologist and worker both are nouns.

Word	Noun	Adjective	Verb	Adverb
technologist	Yes	No	No	No
worker	Yes	No	No	No

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

technologist: a person who uses scientific knowledge to solve practical problems
worker: a person who acts and gets things done

Other hypernyms of technologist include actor, doer.

technologist (noun)	worker (noun)
a person who uses scientific knowledge to solve practical problems	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