tackle vs spear

tackle and spear both are nouns.

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

tackle (noun)	spear (noun)
(American football) grasping an opposing player with the intention of stopping by throwing to the ground	a long pointed rod used as a tool or weapon
(American football) a position on the line of scrimmage, typically opposite one of the offensive guards	an implement with a shaft and barbed point used for catching fish
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)	spear (verb)
seize and throw down an opponent player, who usually carries the ball	pierce with a spear
put a harness	thrust up like a spear
accept as a challenge