St. Ambrose vs Roman Catholic

St. Ambrose and Roman Catholic both are nouns.

Word	Noun	Adjective	Verb	Adverb
St. Ambrose	Yes	No	No	No
Roman Catholic	Yes	Yes	No	No

St. Ambrose (noun)	Roman Catholic (noun)
(Roman Catholic Church) Roman priest who became bishop of Milan; the first Church Father born and raised in the Christian faith; composer of hymns; imposed orthodoxy on the early Christian church and built up its secular power; a saint and Doctor of the Church (340?-397)	the Christian Church based in the Vatican and presided over by a pope and an episcopal hierarchy
	a member of the Roman Catholic Church

St. Ambrose (adjective)	Roman Catholic (adjective)
	of or relating to or supporting Romanism