pallium vs Church of Rome

pallium and Church of Rome both are nouns.

Word	Noun	Adjective	Verb	Adverb
pallium	Yes	No	No	No
Church of Rome	Yes	No	No	No

pallium (noun)	Church of Rome (noun)
cloak or mantle worn by men in ancient Rome	the Christian Church based in the Vatican and presided over by a pope and an episcopal hierarchy
(Roman Catholic Church) vestment consisting of a band encircling the shoulders with two lappets hanging in front and back
(zoology) a protective layer of epidermis in mollusks or brachiopods that secretes a substance forming the shell
the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum