ἑτεροκρανία
From LSJ
διαφέρει δὲ ἡ κωμῳδία τῆς τραγῳδίας, ὅτι ἡ μὲν κωμῳδία ἀπὸ γέλωτος εἰς γέλωτα καταλήγει, ἡ δὲ τραγῳδία ἀπὸ θρήνου εἰς θρῆνον → comedy is different from tragedy, because comedy tapers off from laughter into laughter, but tragedy from lament into lament
English (LSJ)
ἡ,
A pain on one side of the head (cf. ἡμικρανία), Archig. ap. Gal.8.94, Aret.CD1.2, etc. (also ἑτερο-κράνιον, τό, Gal.14.400). Adj. ἑτερο-κρᾱνικός, ή, όν, liable to such pain, Antyll. ap. Orib.10.19.1.