busbar vs local area network

busbar and local area network both are nouns.

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

busbar (noun)	local area network (noun)
an electrical conductor that makes a common connection between several circuits	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