Petty Grievance

I often notice an error from people who talk or write about my religious denomination. I urge them all to follow the guidelines below.

The noun “Episcopalian” is for people.
The adjective “Episcopal” is for things.

Ex.(a): “She’s an Episcopalian.” “The Episcopalians are out of their minds.” “Are you Episcopalian?”
Ex.(b): “The church across the street is Episcopal.” “The Episcopal service is held in the University Chapel on Tuesdays.” “He is an Episcopal priest.”

The last example shows "Episcopal" applied to a person rather than a thing. That's perfectly correct. Why? I don’t know.

Grammatically, I would say “Episcopalian” works like an adjectival noun (as in “The Texas senate”) while “Episcopal” is definitely an adjective (“Are you Texan?”). Psychologically, perhaps in some way Episcopalians regard ordained ministers -- Bishops, Priests, Deacons -- as things rather than people.

Be aware that the expression, “Episcopalian priest,” is wrong, wrong, WRONG. It's true that Episcopal priests are Episcopalians but the sentence "Episcopalian priests are Episcopal" is just a total mess.

If any of you are listening, I beg you, please follow the guidelines.