St. Thomas Aquinas vs Roman Catholic

St. Thomas Aquinas and Roman Catholic both are nouns.

Word	Noun	Adjective	Verb	Adverb
St. Thomas Aquinas	Yes	No	No	No
Roman Catholic	Yes	Yes	No	No

St. Thomas Aquinas (noun)	Roman Catholic (noun)
(Roman Catholic Church) Italian theologian and Doctor of the Church who is remembered for his attempt to reconcile faith and reason in a comprehensive theology; presented philosophical proofs of the existence of God (1225-1274)	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. Thomas Aquinas (adjective)	Roman Catholic (adjective)
	of or relating to or supporting Romanism