Office of the Dead vs Church of Rome

Office of the Dead and Church of Rome both are nouns.

Word	Noun	Adjective	Verb	Adverb
Office of the Dead	Yes	No	No	No
Church of Rome	Yes	No	No	No

Office of the Dead (noun)	Church of Rome (noun)
an office read or sung before a burial mass in the Roman Catholic Church	the Christian Church based in the Vatican and presided over by a pope and an episcopal hierarchy