AC vs electricity

AC and electricity both are nouns.

Word	Noun	Adjective	Verb	Adverb
AC	Yes	No	No	No
electricity	Yes	No	No	No

As nouns, electricity is a hypernym of AC; that is, electricity is a word with a broader meaning than AC:

AC: an electric current that reverses direction sinusoidally
electricity: energy made available by the flow of electric charge through a conductor

Other hypernyms of AC include electrical energy, power.

AC (noun)	electricity (noun)
an electric current that reverses direction sinusoidally	keen and shared excitement
	a physical phenomenon associated with stationary or moving electrons and protons
	energy made available by the flow of electric charge through a conductor