sport vs referee

sport and referee both are nouns.

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

sport (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
the occupation of athletes who compete for pay	someone who reads manuscripts and judges their suitability for publication
verbal wit or mockery (often at another's expense but not to be taken seriously)	an attorney appointed by a court to investigate and report on a case
someone who engages in sports
(biology) an organism that has characteristics resulting from chromosomal alteration
a person known for the way she (or he) behaves when teased or defeated or subjected to trying circumstances
(Maine colloquial) a temporary summer resident of Maine

sport (verb)	referee (verb)
play boisterously	evaluate professionally a colleague's work
wear or display in an ostentatious or proud manner	be a referee or umpire in a sports competition