Genus Hordeum includes several cereal grasses commonly known as barley. Some synonymous terms for this genus include Hordeum vulgare, common barley, Hordeum sativum, cultivated barley, Hordeum distichum, two-row barley, and Hordeum hexastichum, six-row barley. These species are typically used for food and beverage production, with barley being a key ingredient in beer and whiskey production. Barley is also used in animal feed and as a cover crop to prevent soil erosion. This diverse genus is widely cultivated worldwide, with different varieties adapted to different climatic conditions. Overall, the synonyms for Genus Hordeum represent a significant agricultural and economic resource.