| often | 12 | temporal |
| in a way | 4 | manner |
| with an external fuel source | 3 | other |
| fuel cell → be similar to → battery | 19 |
| fuel cell → be compared to → battery | 12 |
| fuel cell → be → battery | 9 |
| fuel cell → be → a kind of battery | 4 |
| negative | neutral | positive |
| 0.079 | 0.745 | 0.176 |
| Raw frequency | 44 |
| Normalized frequency | 0.540 |
| Modifier score | 0.600 |
| Perplexity | 33.970 |