Genus Spinacia is a group of flowering plants that belongs to the family Amaranthaceae. It is also known as Spinachia, Spinachium, and Spinachinum. Spinachia is derived from the Latin word "spinacia" which means spinach. Spinachium is derived from the Greek word "spanakion" which also means spinach. Spinachinum is a combination of the Latin word "spinacia" and the Greek word "-inum," which means "belonging to." These synonyms are often used interchangeably, and they all refer to the same group of plants that are known for their edible leaves and high nutritional value. The term "Genus Spinacia" is commonly used in scientific literature to refer to this group of plants.