air bag vs car

air bag and car both are nouns.

Word	Noun	Adjective	Verb	Adverb
air bag	Yes	No	No	No
car	Yes	No	No	No

air bag (noun)	car (noun)
a safety restraint in an automobile; the bag inflates on collision and prevents the driver or passenger from being thrown forward	a motor vehicle with four wheels; usually propelled by an internal combustion engine
	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