athletics vs bob

athletics and bob both are nouns.

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

athletics (noun)	bob (noun)
an active diversion requiring physical exertion and competition	a short abrupt inclination (as of the head)
participation in sports events as an extracurricular activity	a short or shortened tail of certain animals
a contest between athletes	a small float usually made of cork; attached to a fishing line
	a hanging weight, especially a metal ball on a string
	a long racing sled (for 2 or more people) with a steering mechanism
	a hair style for women and children; a short haircut all around
	a former monetary unit in Great Britain

athletics (verb)	bob (verb)
	cut hair in the style of a bob
	make a curtsy; usually done only by girls and women; as a sign of respect
	remove or shorten the tail of an animal
	move up and down repeatedly in a quick, short movement
	ride a bobsled