| much | 23 | degree |
| a lot | 11 | degree |
| noticeably | 11 | degree |
| engine → be → quieter | 138 |
| engine → run → quieter | 31 |
| engine → get → quieter | 6 |
| engine → become → quieter | 5 |
| negative | neutral | positive |
| 0.041 | 0.323 | 0.636 |
| Raw frequency | 180 |
| Normalized frequency | 0.662 |
| Modifier score | 0.800 |
| Perplexity | 285.175 |