driver vs worker

driver and worker both are nouns.

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

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

driver (noun)	worker (noun)
a golf club (a wood) with a near vertical face that is used for hitting long shots from the tee	sterile member of a colony of social insects that forages for food and cares for the larvae
(computer science) a program that determines how a computer will communicate with a peripheral device	a person who works at a specific occupation
the operator of a motor vehicle	a member of the working class (not necessarily employed)
a golfer who hits the golf ball with a driver	a person who acts and gets things done
someone who drives animals that pull a vehicle