driver vs lasher

driver and lasher both are nouns.

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

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

Other hyponyms of driver include charioteer, coachman, mahout, teamster, waggoner, wagoner.

driver (noun)	lasher (noun)
a golf club (a wood) with a near vertical face that is used for hitting long shots from the tee	a driver who urges the animals on with lashes of a whip
(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