evaluator vs umpire

evaluator and umpire both are nouns.

Word	Noun	Adjective	Verb	Adverb
evaluator	Yes	No	No	No
umpire	Yes	No	Yes	No

As nouns, umpire is a hyponym of evaluator; that is, umpire is a word with a more specific, narrower meaning than evaluator:

Other hyponyms of evaluator include appraiser, valuator, arbiter, arbitrator, critic.

evaluator (noun)	umpire (noun)
an authority who is able to estimate worth or quality	an official at a baseball game
	someone chosen to judge and decide a disputed issue

evaluator (verb)	umpire (verb)
	be a referee or umpire in a sports competition