Church of Rome and Catholic church

Church of Rome noun - The Christian Church based in the Vatican and presided over by a pope and an episcopal hierarchy.

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

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

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