football vs runner

football and runner both are nouns.

Word	Noun	Adjective	Verb	Adverb
football	Yes	No	No	No
runner	Yes	No	No	No

football (noun)	runner (noun)
any of various games played with a ball (round or oval) in which two teams try to kick or carry or propel the ball into each other's goal	fish of western Atlantic: Cape Cod to Brazil
the inflated oblong ball used in playing American football	device consisting of the parts on which something can slide along
	a long narrow carpet
	a trained athlete who competes in foot races
	someone who imports or exports without paying duties
	a baseball player on the team at bat who is on base (or attempting to reach a base)
	someone who travels on foot by running
	a person who is employed to deliver messages or documents
	(football) the player who is carrying (and trying to advance) the ball on an offensive play
	a horizontal branch from the base of plant that produces new plants from buds at its tips