There are several synonyms for the term "joint-evil", which refers to a condition of pain and swelling within the body's joints. Some of the most common synonyms for this condition include joint pain, osteoarthritis, rheumatoid arthritis, gout, and osteoporosis. Joint pain is a general term used to encompass any pain or discomfort experienced in the joints, while osteoarthritis refers specifically to a degenerative joint disease that causes joint pain and stiffness. Rheumatoid arthritis is an autoimmune disorder that can cause joint pain and inflammation, while gout is a type of arthritis caused by the build-up of uric acid crystals in the joints. Osteoporosis is a condition that causes the bones to weaken and become more susceptible to fractures, which can also lead to joint pain.