auto vs automotive vehicle

auto and automotive vehicle both are nouns.

Word	Noun	Adjective	Verb	Adverb
auto	Yes	No	No	No
automotive vehicle	Yes	No	No	No

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

auto: a motor vehicle with four wheels; usually propelled by an internal combustion engine
automotive vehicle: a self-propelled wheeled vehicle that does not run on rails

Other hypernyms of auto include motor vehicle.

auto (noun)	automotive vehicle (noun)
a motor vehicle with four wheels; usually propelled by an internal combustion engine	a self-propelled wheeled vehicle that does not run on rails