refereeing vs referee

refereeing and referee both are nouns.

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

refereeing (noun)	referee (noun)
the act of umpiring	(sports) the chief official (as in boxing or American football) who is expected to ensure fair play
	someone who reads manuscripts and judges their suitability for publication
	an attorney appointed by a court to investigate and report on a case

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