car vs luggage van

car and luggage van both are nouns.

Word	Noun	Adjective	Verb	Adverb
car	Yes	No	No	No
luggage van	Yes	No	No	No

As nouns, luggage van is a hyponym of car; that is, luggage van is a word with a more specific, narrower meaning than car:

car (noun)	luggage van (noun)
a motor vehicle with four wheels; usually propelled by an internal combustion engine	a railway car where passengers' bags are carried
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