alternating electric current vs alternating current

alternating electric current and alternating current both are nouns.

Word	Noun	Adjective	Verb	Adverb
alternating electric current	Yes	No	No	No
alternating current	Yes	No	No	No

As nouns, alternating electric current and alternating current are synonyms defined as:

alternating electric current and alternating current: an electric current that reverses direction sinusoidally

Other synonyms of alternating electric current include AC.

alternating electric current (noun)	alternating current (noun)
an electric current that reverses direction sinusoidally	an electric current that reverses direction sinusoidally