real power vs electrical energy

real power and electrical energy both are nouns.

Word	Noun	Adjective	Verb	Adverb
real power	Yes	No	No	No
electrical energy	Yes	No	No	No

As nouns, electrical energy is a hypernym of real power; that is, electrical energy is a word with a broader meaning than real power:

real power: the portion of power that, averaged over a complete cycle of the AC waveform, results in net transfer of energy in one direction.
electrical energy: energy made available by the flow of electric charge through a conductor

Other hypernyms of real power include electricity, power.

real power (noun)	electrical energy (noun)
the portion of power that, averaged over a complete cycle of the AC waveform, results in net transfer of energy in one direction.	energy made available by the flow of electric charge through a conductor