St. Thomas vs Roman Catholic

St. Thomas and Roman Catholic both are nouns.

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

St. Thomas (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
the Apostle who would not believe the resurrection of Jesus until he saw Jesus with his own eyes	a member of the Roman Catholic Church

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