driver vs race driver

driver and race driver both are nouns.

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

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

driver (noun)	race driver (noun)
a golf club (a wood) with a near vertical face that is used for hitting long shots from the tee	someone who drives racing cars at high speeds
(computer science) a program that determines how a computer will communicate with a peripheral device
the operator of a motor vehicle
a golfer who hits the golf ball with a driver
someone who drives animals that pull a vehicle