Mare Imbrium is a Latin name for one of the larger "seas" (or flat basaltic plains) on the moon's surface, located in the moon's northwest quadrant. There are other synonyms for Mare Imbrium that refer to the same geographical feature. Some of these synonyms include Imbrian Sea, Sea of Showers, Ocean of Storms, and Sea of Rains. While these synonyms appear to be different, they all refer to the same mare. The term Mare Imbrium is derived from the Latin language, where "mare" means "sea," while "imbrium" means "of the shower." These synonyms are often used interchangeably in astronomy and lunar geography.