road map vs car

road map and car both are nouns.

Word	Noun	Adjective	Verb	Adverb
road map	Yes	No	No	No
car	Yes	No	No	No

road map (noun)	car (noun)
a map showing roads (for automobile travel)	a motor vehicle with four wheels; usually propelled by an internal combustion engine
a detailed plan or explanation to guide you in setting standards or determining a course of action	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