Episcopal Church vs Protestant Episcopal Church

Episcopal Church and Protestant Episcopal Church both are nouns.

Word	Noun	Adjective	Verb	Adverb
Episcopal Church	Yes	No	No	No
Protestant Episcopal Church	Yes	No	No	No

As nouns, Episcopal Church and Protestant Episcopal Church are synonyms defined as:

Episcopal Church and Protestant Episcopal Church: United States church that is in communication with the see of Canterbury

Episcopal Church (noun)	Protestant Episcopal Church (noun)
an autonomous branch of the Anglican Communion in Scotland	United States church that is in communication with the see of Canterbury
United States church that is in communication with the see of Canterbury