| mild | 0.62 |
| less severe | 0.57 |
| severe | 0.53 |
| more severe | 0.36 |
| subtle | 0.35 |
| variable | 0.25 |
| nonspecific | 0.23 |
| bad | 0.20 |
| visible | 0.20 |
| less specific | 0.16 |
| observed | 0.41 |
| associated with pneumon… | 0.39 |
| caused by bacteria | 0.29 |
| described by hippocrates | 0.28 |
| described by peripneumo… | 0.25 |
| described by pleuritic … | 0.25 |
| caused by fungus | 0.16 |