computing device vs bus

computing device and bus both are nouns.

Word	Noun	Adjective	Verb	Adverb
computing device	Yes	No	No	No
bus	Yes	No	Yes	No

computing device (noun)	bus (noun)
a machine for performing calculations automatically	a vehicle carrying many passengers; used for public transport
	a car that is old and unreliable
	an electrical conductor that makes a common connection between several circuits
	the topology of a network whose components are connected by a busbar

computing device (verb)	bus (verb)
	remove used dishes from the table in restaurants
	ride in a bus
	send or move around by bus