bus vs local area network

bus and local area network both are nouns.

Word	Noun	Adjective	Verb	Adverb
bus	Yes	No	Yes	No
local area network	Yes	No	No	No

bus (noun)	local area network (noun)
a vehicle carrying many passengers; used for public transport	a local computer network for communication between computers; especially a network connecting computers and word processors and other electronic office equipment to create a communication system between offices
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

bus (verb)	local area network (verb)
remove used dishes from the table in restaurants
ride in a bus
send or move around by bus