the Great Convexity
The Canadian-side name for the ceded toxic territory the U.S. calls the Great Concavity: "the glass-walled Great Convexity whose southern array of ATHSCME Effectuators blow the tidy U.S.'s northern oxides north" (p. 385), Canada's experience of the U.S.'s Experialistic "gift" (p. 59). One place, two names, depending on which side of the reconfigured border is naming it (see the Great Concavity).