Saint Augustine vs Roman Catholic

Saint Augustine and Roman Catholic both are nouns.

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

Saint Augustine (noun)	Roman Catholic (noun)
a resort city in northeastern Florida; the oldest city in the United States	the Christian Church based in the Vatican and presided over by a pope and an episcopal hierarchy
(Roman Catholic Church) one of the great Fathers of the early Christian church; after a dramatic conversion to Christianity he became bishop of Hippo Regius in North Africa; St. Augustine emphasized man's need for grace (354-430)	a member of the Roman Catholic Church

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