ἢ λέγε τι σιγῆς κρεῖττον ἢ σιγὴν ἔχε → either say something better than silence or keep silence (Menander)
edge: P. χεῖλος, τό; see edge.
border line: P. and V. ὅρος, ὁ, P. μεθόρια, τά (Xen.).
Met., surplus: Ar. and P. περιουσία, ἡ.
difference: P. and V. διάφορον, τό.