car vs backseat

car and backseat both are nouns.

Word	Noun	Adjective	Verb	Adverb
car	Yes	No	No	No
backseat	Yes	No	No	No

car (noun)	backseat (noun)
a motor vehicle with four wheels; usually propelled by an internal combustion engine	a seat at the back of a vehicle (especially the seat at the back of an automobile)
a wheeled vehicle adapted to the rails of railroad	a secondary or inferior position or status
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