| properly | 6 | degree |
| completely | 6 | degree |
| without the need of any fan | 5 | other |
| engine → be → cooled | 34 |
| engine → be → air-cooled | 28 |
| engine → be cooled by → air | 7 |
| negative | neutral | positive |
| 0.141 | 0.677 | 0.183 |
| Raw frequency | 69 |
| Normalized frequency | 0.544 |
| Modifier score | 0.675 |
| Perplexity | 260.322 |