Russian Orthodox refers to the Christian faith practiced by members of the Russian Orthodox Church. There are numerous synonyms that can be used to refer to this faith and its followers. One common synonym is Eastern Orthodox, as the Russian Orthodox Church is part of the wider Eastern Orthodox Church. Other synonyms include Greek Orthodox, Serbian Orthodox, and Romanian Orthodox, all of which are specific subsets of the Eastern Orthodox Church. Additionally, some may use the term Orthodox Christian to refer to followers of this faith, regardless of their nationality or cultural background. Overall, there are a variety of synonyms that can be used to refer to the Russian Orthodox Church and its adherents.