терн

From LSJ

ἔργοισι χρηστός, οὐ λόγοις ἔφυν μόνον → a friend in deeds, and not in words alone

Source

Russian > Greek

βράβυλον, βάτος, ῥάχος, ῥαχός, ῥηχός, τρίβολος, ἄκανθα