bob vs tackle

bob and tackle both are nouns.

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

bob (noun)	tackle (noun)
a short abrupt inclination (as of the head)	(American football) grasping an opposing player with the intention of stopping by throwing to the ground
a short or shortened tail of certain animals	(American football) a position on the line of scrimmage, typically opposite one of the offensive guards
a small float usually made of cork; attached to a fishing line	gear consisting of ropes etc. supporting a ship's masts and sails
a hanging weight, especially a metal ball on a string	gear used in fishing
a long racing sled (for 2 or more people) with a steering mechanism	the person who plays offensive or defensive tackle on a football team
a hair style for women and children; a short haircut all around
a former monetary unit in Great Britain

bob (verb)	tackle (verb)
cut hair in the style of a bob	seize and throw down an opponent player, who usually carries the ball
make a curtsy; usually done only by girls and women; as a sign of respect	put a harness
remove or shorten the tail of an animal	accept as a challenge
move up and down repeatedly in a quick, short movement
ride a bobsled