| very | 8 | degree |
| through physical vapor deposition | 2 | manner |
| to remove | 2 | other |
| coating → be → difficult | 14 |
| coating → be difficult to → remove | 6 |
| coating → be difficult to → apply | 4 |
| coating → become → difficult | 3 |
| negative | neutral | positive |
| 0.569 | 0.386 | 0.045 |
| Raw frequency | 27 |
| Normalized frequency | 0.391 |
| Modifier score | 0.660 |
| Perplexity | 104.397 |