harpoon vs tackle

harpoon and tackle both are nouns.

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

harpoon (noun)	tackle (noun)
a spear with a shaft and barbed point for throwing; used for catching large fish or whales; a strong line is attached to it	(American football) grasping an opposing player with the intention of stopping by throwing to the ground
	(American football) a position on the line of scrimmage, typically opposite one of the offensive guards
	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

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