St. Augustine vs Roman Catholic

St. Augustine and Roman Catholic both are nouns.

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

St. 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

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