Ask at the forum if you have an Ancient or Modern Greek query!
Γελᾷ δ' ὁ μῶρος, κἄν τι μὴ γελοῖον ᾖ → Mens stulta ridet, quando ridendum est nihil → Es lacht der Tor, auch wenn es nichts zu lachen gibt
bog: P. ἕλος, τό, Ar. and P. τέλμα, τό.
skin of a serpent: V. χιτών, ὁ (Eur., Iphigenia in Tauris 288).