Ague root is a common term used to refer to the herb called Boneset. This plant is known for its medicinal properties and is commonly used to relieve symptoms associated with cold and flu, such as fever and chills. Other synonyms for ague root include Thoroughwort and Eupatorium Perfoliatum. Thoroughwort is another name for Boneset and refers to the herb's effectiveness in treating a wide range of ailments. Eupatorium Perfoliatum is the scientific name for Boneset and is derived from the Greek words "eu" meaning "good" and "patera" meaning "bowl," due to the herb's distinctive leaves that clasp the stem like a bowl.