predicate vs predicator

predicate and predicator both are nouns.

Word	Noun	Adjective	Verb	Adverb
predicate	Yes	No	Yes	No
predicator	Yes	No	No	No

predicate (noun)	predicator (noun)
one of the two main constituents of a sentence; the predicate contains the verb and its complements	an expression that predicates
(logic) what is predicated of the subject of a proposition; the second term in a proposition is predicated of the first term by means of the copula

predicate (verb)	predicator (verb)
affirm or declare as an attribute or quality of
involve as a necessary condition of consequence; as in logic
make the (grammatical) predicate in a proposition