Church of Rome vs apostolic delegate

Church of Rome and apostolic delegate both are nouns.

Word	Noun	Adjective	Verb	Adverb
Church of Rome	Yes	No	No	No
apostolic delegate	Yes	No	No	No

Church of Rome (noun)	apostolic delegate (noun)
the Christian Church based in the Vatican and presided over by a pope and an episcopal hierarchy	(Roman Catholic Church) a representative of the Holy See in a country that has no formal diplomatic relations with it