tackle vs football

tackle and football both are nouns.

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

tackle (noun)	football (noun)
(American football) grasping an opposing player with the intention of stopping by throwing to the ground	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
(American football) a position on the line of scrimmage, typically opposite one of the offensive guards	the inflated oblong ball used in playing American football
gear consisting of ropes etc. supporting a ship's masts and sails
gear used in fishing
the person who plays offensive or defensive tackle on a football team

tackle (verb)	football (verb)
seize and throw down an opponent player, who usually carries the ball
put a harness
accept as a challenge