gradual vs Church of Rome

gradual and Church of Rome both are nouns.

Word	Noun	Adjective	Verb	Adverb
gradual	Yes	Yes	No	No
Church of Rome	Yes	No	No	No

gradual (noun)	Church of Rome (noun)
(Roman Catholic Church) an antiphon (usually from the Book of Psalms) immediately after the epistle at Mass	the Christian Church based in the Vatican and presided over by a pope and an episcopal hierarchy

gradual (adjective)	Church of Rome (adjective)
proceeding in small stages
(of a topographical gradient) not steep or abrupt