apostolic delegate vs Church of Rome

apostolic delegate and Church of Rome both are nouns.

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

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