var vs volt-ampere

var and volt-ampere both are nouns.

Word	Noun	Adjective	Verb	Adverb
var	Yes	No	No	No
volt-ampere	Yes	No	No	No

As nouns, var and volt-ampere are synonyms defined as:

var and volt-ampere: a unit of electrical power in an AC circuit equal to the power dissipated when 1 volt produces a current of 1 ampere

var (noun)	volt-ampere (noun)
a unit of electrical power in an AC circuit equal to the power dissipated when 1 volt produces a current of 1 ampere	a unit of electrical power in an AC circuit equal to the power dissipated when 1 volt produces a current of 1 ampere