busbar vs powerhouse

busbar and powerhouse both are nouns.

Word	Noun	Adjective	Verb	Adverb
busbar	Yes	No	No	No
powerhouse	Yes	No	No	No

busbar (noun)	powerhouse (noun)
an electrical conductor that makes a common connection between several circuits	an electrical generating station
	a team considered to be the best of its class
	a highly energetic and indefatigable person