People can call me whatever they want to. The Catholic Church does not use “Roman Catholic Church” in their documents, so I don’t either, but it is commonly used by others. It is usually clear what the meaning is. For example in InfoPlease, this sentence appears:
“Catholics of Eastern rites have their own separate codes of canon law, approved by the Roman Catholic Church.”
Read more:
canon law — Infoplease.com infoplease.com/ce6/society/A0810222.html#ixzz1sXx7Fv47
This implies that the Catholic Church is the name of the Latin and eastern Catholic churches taken together, and that Roman Catholic Church means at least the Supreme Pontiff with Roman Curia.