The term "acres" refers to a unit of land area used in both the United States and Britain, which is equal to 10 square chains or 43,560 square feet. An acre is a smaller subdivision of an acreage, which means the total amount of land that covers a certain number of acres. Acreage can refer to any piece of land, regardless of its shape or size, and it's often used in real estate listings to describe the overall area of a property.