| in color | 14 | other |
| another reason | 5 | cause |
| sometimes | 3 | temporal |
| nail → be → dark | 47 |
| nail → turn → dark | 8 |
| nail → become → dark | 5 |
| nail → appear → dark | 4 |
| nail → turn → dark color | 3 |
| negative | neutral | positive |
| 0.428 | 0.507 | 0.065 |
| Raw frequency | 67 |
| Normalized frequency | 0.554 |
| Modifier score | 0.467 |
| Perplexity | 385.008 |