Roman Catholic Church vs Eusebius Hieronymus

Roman Catholic Church and Eusebius Hieronymus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Roman Catholic Church	Yes	No	No	No
Eusebius Hieronymus	Yes	No	No	No

Roman Catholic Church (noun)	Eusebius Hieronymus (noun)
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 whose major work was his translation of the Scriptures from Hebrew and Greek into Latin (which became the Vulgate); a saint and Doctor of the Church (347-420)