noun - a progressive neurological disease that affects movement. It causes shaking, stiffness, and difficulty with walking and coordination. It is caused by the loss of dopamine-producing cells in the brain
noun - the use of threats or force to make someone do something against their will
verb - to secretly tell someone important information, usually to warn them or help the police
noun - a distinctive feature or characteristic that clearly shows the quality or identity of something
adjective - having marks or scratches on the surface because it has been rubbed against something