electric vs auto

electric and auto both are nouns.

Word	Noun	Adjective	Verb	Adverb
electric	Yes	Yes	No	No
auto	Yes	No	No	No

As nouns, auto is a hypernym of electric; that is, auto is a word with a broader meaning than electric:

electric: a car that is powered by electricity
auto: a motor vehicle with four wheels; usually propelled by an internal combustion engine

Other hypernyms of electric include automobile, car, machine, motorcar.

electric (noun)	auto (noun)
a car that is powered by electricity	a motor vehicle with four wheels; usually propelled by an internal combustion engine

electric (adjective)	auto (adjective)
using or providing or producing or transmitting or operated by electricity
affected by emotion as if by electricity; thrilling
(of a situation) exceptionally tense