internal-combustion engine vs automotive vehicle

internal-combustion engine and automotive vehicle both are nouns.

Word	Noun	Adjective	Verb	Adverb
internal-combustion engine	Yes	No	No	No
automotive vehicle	Yes	No	No	No

internal-combustion engine (noun)	automotive vehicle (noun)
a heat engine in which combustion occurs inside the engine rather than in a separate furnace; heat expands a gas that either moves a piston or turns a gas turbine	a self-propelled wheeled vehicle that does not run on rails