| like other plant groups | 6 | other |
| in our climate | 2 | location |
| herb → be → perennial | 49 |
| herb → be → perennial plants | 4 |
| herb → be → a perennial | 3 |
| negative | neutral | positive |
| 0.041 | 0.709 | 0.250 |
| Raw frequency | 56 |
| Normalized frequency | 0.730 |
| Modifier score | 0.669 |
| Perplexity | 108.616 |