| historically | 4 | temporal |
| in the united states | 3 | location |
| as a colorant | 3 | manner |
| bark → be used for → tanning | 35 |
| bark → be used in → tanning | 8 |
| negative | neutral | positive |
| 0.072 | 0.775 | 0.153 |
| Raw frequency | 43 |
| Normalized frequency | 0.521 |
| Modifier score | 1.000 |
| Perplexity | 71.982 |