Church of Rome vs Mass card

Church of Rome and Mass card both are nouns.

Word	Noun	Adjective	Verb	Adverb
Church of Rome	Yes	No	No	No
Mass card	Yes	No	No	No

Church of Rome (noun)	Mass card (noun)
the Christian Church based in the Vatican and presided over by a pope and an episcopal hierarchy	(Roman Catholic Church) a card sent to a bereaved family that says the sender has arranged for a Mass to be said in memory of the deceased