Masa & Masa Harina
Masa — literally "dough" in Spanish — is a cornmeal dough traditionally used in Latin cuisine. Unlike cornmeal, it's made of sun- or fire-dried corn kernels that have been cooked in a solution of lime or ash and water and then ground.
When dried again, the substance becomes masa harina, or "dough flour." Both are used to make tortillas, empanadas, tamales, among other dishes.