Byzantine Church and Catholic church

Byzantine Church noun - The Catholic Church as it existed in the Byzantine Empire.

Catholic church and Byzantine Church are semantically related. In some cases you can use "Catholic church" instead a noun phrase "Byzantine Church".

Catholic church noun - Any of several churches claiming to have maintained historical continuity with the original Christian Church.

Byzantine Church and Catholic church are semantically related. Sometimes you can replace phrase "Byzantine Church" with "Catholic church", this phrases are similar.