Leitourgeia—Greek, noun, meaning “public work” (”work of the people” being another common understanding), as in “liturgy.”
kai—Greek, conjunction, meaning “and.”
Qurbana—Syriac, noun, meaning “offering” or “Eucharist.”
Contra—Latin, preposition, meaning “against,” as in Athanasius contra mundum, St. Athanasius of Alexandria having stood fast for the Orthodox Christian faith in the face of the Arian heresy.
den Zeitgeist—German, accusative singular, meaning “Spirit of the Age,” as in the chapter “Through Darkest Zeitgeistheim” in C. S. Lewis’ The Pilgrim’s Regress, where the protagonist John faces the most horrible monster Lewis has ever depicted, the Spirit of the Age.
Also, Lewis wrote an introduction for an English-language edition of St. Athanasius’ On the Incarnation.