| at an early stage | 4 | temporal |
| by the naked eye | 3 | manner |
| easily | 3 | manner |
| corrosion → be → detected | 15 |
| corrosion → be → detectable | 5 |
| corrosion → be → observed | 5 |
| corrosion → be → suspected | 3 |
| negative | neutral | positive |
| 0.380 | 0.584 | 0.036 |
| Raw frequency | 28 |
| Normalized frequency | 0.688 |
| Modifier score | 0.150 |
| Perplexity | 74.120 |