Divine Office vs Roman Church

Divine Office and Roman Church both are nouns.

Word	Noun	Adjective	Verb	Adverb
Divine Office	Yes	No	No	No
Roman Church	Yes	No	No	No

Divine Office (noun)	Roman Church (noun)
canonical prayers recited daily by priests (e.g. the breviary of the Roman Catholic Church)	the Christian Church based in the Vatican and presided over by a pope and an episcopal hierarchy