When capitalized, the word refers specifically to that branch of Christianity headed by the pope, the Roman Catholic Church. In lowercase, the word is a synonym for universal or worldwide, as in the catholic church. Most Roman Catholics are Western or Latin Catholics, meaning they follow church practice as it was formulated in Rome. But the Roman Catholic Church also includes 22 Eastern Catholic churches, whose practices closely resemble those of the Eastern Orthodox, including venerating icons, allowing a married priesthood and giving the three sacraments of initiation – baptism, First Communion and confirmation – to infants. Never refer to Eastern Catholics as Orthodox or vice versa. Use Roman Catholic if a distinction is being made between the church and members of other denominations who often describe themselves as Catholic, such as some high-church Episcopalians and members of some national Catholic churches that have broken with Rome (for example, the Polish National Catholic Church and the Lithuanian National Catholic Church).