Coptic Church vs church

Coptic Church and church both are nouns.

Word	Noun	Adjective	Verb	Adverb
Coptic Church	Yes	No	No	No
church	Yes	No	Yes	No

As nouns, church is a hypernym of Coptic Church; that is, church is a word with a broader meaning than Coptic Church:

Coptic Church: the ancient Christian church of Egypt
church: one of the groups of Christians who have their own beliefs and forms of worship

Other hypernyms of Coptic Church include Christian church.

Coptic Church (noun)	church (noun)
the ancient Christian church of Egypt	a service conducted in a house of worship
	a place for public (especially Christian) worship
	one of the groups of Christians who have their own beliefs and forms of worship
	the body of people who attend or belong to a particular local church

Coptic Church (verb)	church (verb)
	perform a special church rite or service for