athletics vs referee

athletics and referee both are nouns.

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

athletics (noun)	referee (noun)
an active diversion requiring physical exertion and competition	(sports) the chief official (as in boxing or American football) who is expected to ensure fair play
participation in sports events as an extracurricular activity	someone who reads manuscripts and judges their suitability for publication
a contest between athletes	an attorney appointed by a court to investigate and report on a case

athletics (verb)	referee (verb)
	evaluate professionally a colleague's work
	be a referee or umpire in a sports competition