Felwort refers to a plant species that is known for its medicinal properties in treating liver and gall bladder issues. This plant goes by several other names, including bitterwort, yellow gentian, or gentianella. The term "gentianella" comes from the plant's resemblance to the gentian flower shrub. Some other synonyms for felwort include yellowwort, centiyane, and genciana amarga. Yellowwort sticks to the plant's yellow flowers, while centiyane is derived from the plant's scientific name, Centaurium erythraea. This versatile plant has been used in several traditional medicines, and its synonyms highlight its importance in various cultures.