nouns
the operator of a motor vehicle
is a type of (narrower)
an agent that operates some apparatus or machine
"the operator of the switchboard"
someone who drives animals that pull a vehicle
is a type of (narrower)
a person who works at a specific occupation
"he is a good worker"
a golfer who hits the golf ball with a driver
is a type of (narrower)
someone who plays the game of golf
(computer science) a program that determines how a computer will communicate with a peripheral device
a golf club (a wood) with a near vertical face that is used for hitting long shots from the tee