Saint Ambrose vs Roman Catholic

Saint Ambrose and Roman Catholic both are nouns.

Word	Noun	Adjective	Verb	Adverb
Saint Ambrose	Yes	No	No	No
Roman Catholic	Yes	Yes	No	No

Saint 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

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