In cases of obsessive-compulsive disorder (ocd), frequently accompany obsessions and appear to serve the function of reducing the anxiety created by disturbing thoughts.

The answer is compulsions as they are the one being paired to an individual that causes their anxiety. A compulsion is where an individual has the tendency of doing something that are forcefully made or they are pressured to do. People who have this make their anxiety lessen because it disrupts the thoughts that are bothering them.

answer; not notated (at least, not in the traditional sense) and includes many improvised sections and solos;

answer; ///( insanity );