Eastern Orthodox Church vs inner cassock

Eastern Orthodox Church and inner cassock both are nouns.

Word	Noun	Adjective	Verb	Adverb
Eastern Orthodox Church	Yes	No	No	No
inner cassock	Yes	No	No	No

Eastern Orthodox Church (noun)	inner cassock (noun)
derived from the Byzantine Church and adhering to Byzantine rites	a long, collared garment coming to the feet, with narrow, tapered sleeves, worn by all major and minor clergy, monastics, and often by male seminarians.