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Lexical properties of each category.
| Lexical properties | Fish | TM | MM | Bird |
|---|---|---|---|---|
| Number of characters | 3.0 (0.9) | 2.9 (0.7) | 3.5 (0.9) | 3.0 (0.8) |
| Number of morae | 2.9 (0.9) | 2.9 (0.7) | 3.3 (0.9) | 2.9 (0.6) |
| Familiarity | 5.9 (0.4) | 6.0 (0.3) | 5.7 (0.6) | 6.0 (0.3) |
| Frequency (per million words) | 3.4 (3.4) | 15.3 (18.3) | 1.7 (2.8) | 6.5 (5.6) |
Mean (SD). TM: terrestrial mammal; MM: marine mammal.
