The Church of Romania is one of the autocephalous Orthodox churches. The majority of Romanians in Romania by a very wide margin (about 20 million, or 86.7% of the population, according to the 2002 census data) belong to it. In terms of population, the Church of Romania is second in size only to the Church of Russia. In the Romanian language it is most often known as Ortodoxie, but is also sometimes known as Dreapta credinţă ("right/correct belief"—compare to Greek ορθοδοξια, "straight/correct belief"). Orthodox believers are also known as ortodocşi, dreptcredincioşi or dreptmăritori creştini.