The name pomegranate derives from medieval Latinpōmum "apple" and grānātum "seeded". Possibly stemming from the old French word for the fruit, pomme-grenade, the pomegranate was known in early English as "apple of Grenada"—a term which today survives only in heraldicblazons. This is a folk etymology, confusing the Latin granatus with the name of the Spanish city of Granada, which derives from Arabic.
Garnet derives from Old French grenat by metathesis, from Medieval Latin granatum as used in a different meaning "of a dark red color". This derivation may have originated from pomum granatum, describing the color of pomegranate pulp, or from granum, referring to "red dye, cochineal".
The French term for pomegranate, grenade, has given its name to the military grenade.