εἰς πέλαγος σπέρµα βαλεῖν καὶ γράµµατα γράψαι ἀµφότερος µόχθος τε κενὸς καὶ πρᾶξις ἄκαρπος → throwing seeds and writing letters at sea are both a vain and fruitless endeavor
ἀνδράχνη, ἀνθράκιον, ἐσχάρα, ἐσχάριον, ἐσχαρίς, θέρμαυστρον, περίπυρον, πυρεῖον, πυρεύς