ἔγνω δὲ φώρ τε φῶρα καὶ λύκος λύκον → the thief knows the thief and the wolf knows the wolf, and thief knows thief and wolf his fellow wolf, set a thief to catch a thief
συνήθεια, σύστημα, αἰπόλιον, ποίμνη, ἀγέλη, ἀγέλα, ποιμανόριον, νόμευμα, πῶϋ, πώεος