motorcar vs floorboard

motorcar and floorboard both are nouns.

Word	Noun	Adjective	Verb	Adverb
motorcar	Yes	No	No	No
floorboard	Yes	No	No	No

motorcar (noun)	floorboard (noun)
a motor vehicle with four wheels; usually propelled by an internal combustion engine	a board in the floor
	the floor of an automobile