car vs automobile engine

car and automobile engine both are nouns.

Word	Noun	Adjective	Verb	Adverb
car	Yes	No	No	No
automobile engine	Yes	No	No	No

car (noun)	automobile engine (noun)
a motor vehicle with four wheels; usually propelled by an internal combustion engine	the engine that propels an automobile
a wheeled vehicle adapted to the rails of railroad
where passengers ride up and down
the compartment that is suspended from an airship and that carries personnel and the cargo and the power plant
a conveyance for passengers or freight on a cable railway