The articles presents some differences regarding the terminology used by the Romanian Orthodox Church, on the one hand, and the Romanian Church United with Rome, Greek-Catholic, on the other. The analysis is based on the text of the Divine Liturgy of Saint John Chrysostom. The differences concern not only strictly religious terms, but also neutral words. This seems to be the result of a deliberate linguistic policy of the Greek Catholic Church, which often uses different terms than the Romanian Orthodox Church. The Orthodox terms in question were borrowed from Slavonic or Greek, while the Greek Catholic terms are Romanian words inherited from Latin or recent loanwords from Latin and modern Romance languages.