| A | B |
| Fog | result of medication and EST |
| EST | Electro Shock Therapy/Treatment |
| Chief | pretends to be blind and deaf |
| Big Nurse | in charge of the ward, represents COMBINE |
| Combine | system of control |
| Acutes | patients that are constantly "ill" |
| Chronics | patients whose "illness" is off and on |
| Billy Bibbitt | stutters, has a date with Candy |
| Turkle | night orderly, helps men have a party |
| Cheswick | follower, sent for EST after melt down during a meeting |
| Peckin' Party | Theraputic community session where men pick on each other |
| McMurphy | challenges Big Nurse but backs down when he learns he has to behave to be released |
| Harding | original "bull-goose looney" |
| Dr. Spivey | helps men go on fishing trip despite of the nurse |
| Voluntary | patients may come and go as they please |
| Committed | patients may not leave the ward until they are approved by the Big Nurse |
| Taber | a "successful dismissal" |
| Blastic | cut open in Chief's dream |