Greek Catholic refers to the Eastern Catholic Churches in full communion with the Roman Catholic Church but with distinct Byzantine liturgical traditions. Synonyms for Greek Catholic include Byzantine Catholic, Eastern Catholic, and Ukrainian Catholic. Byzantine Catholicism honors the Eastern Christian tradition, incorporating hymns, prayers, and liturgical practices from the Greek and Slavonic Orthodox Churches. Eastern Catholicism describes the 23 autonomous Churches with Byzantine, Alexandrian, Syriac, Armenian, Maronite, and Chaldean liturgical and theological traditions. Ukrainian Catholicism is the largest of the Eastern Catholic Churches with over 4 million members and a distinct cultural identity. These synonyms denote the unique Catholic traditions of the Eastern Churches, connecting the faithful to their rich and diverse spiritual heritage.