drive around vs drive

drive around is not a noun while drive is a noun.

Word	Noun	Adjective	Verb	Adverb
drive around	No	No	Yes	No
drive	Yes	No	Yes	No

As verbs, drive is a hypernym of drive around; that is, drive is a word with a broader meaning than drive around:

drive around (noun)	drive (noun)
	a journey in a vehicle (usually an automobile)
	a series of actions advancing a principle or tending toward a particular end
	hitting a golf ball off of a tee with a driver
	the act of applying force to propel something
	(sports) a hard straight return (as in tennis or squash)
	the act of driving a herd of animals overland
	a wide scenic road planted with trees
	a road leading up to a private house
	a mechanism by which force or power is transmitted in a machine
	(computer science) a device that writes data onto or reads data from a storage medium
	the trait of being highly motivated
	a physiological state corresponding to a strong need or desire

drive around (verb)	drive (verb)
drive someone in a vehicle	move into a desired direction of discourse
drive without any particular aim	(hunting) chase from cover into more open ground
	(hunting) search for game
	cause to function by supplying the force or power for or by controlling
	force into or from an action or state, either physically or metaphorically
	cause to move rapidly by striking or throwing with force
	hit very hard, as by swinging a bat horizontally
	strike with a driver, as in teeing off
	excavate horizontally
	push, propel, or press with force
	cause to move back by force or influence
	compel somebody to do something, often against his own will or judgment
	travel or be transported in a vehicle
	operate or control a vehicle
	cause someone or something to move by driving
	move by being propelled by a force
	urge forward
	proceed along in a vehicle
	strive and make an effort to reach a goal
	to compel or force or urge relentlessly or exert coercive pressure on, or motivate strongly
	work as a driver
	have certain properties when driven