Office of the Dead vs Western Church

Office of the Dead and Western Church both are nouns.

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

Office of the Dead (noun)	Western Church (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