Base difficulty: Level 214 edit
Level distribution for verb (perception): 5: 1 8: 2 185: 1 205: 1 214: 12 230: 1 265: 1 279: 1 455: 1 1040: 1 1399: 4
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
cefr |
B1 (3 of 6) | 4200 |
Rank used = synthetic rank this tier contributes to the combined frequency rank (lower = more common).
Corpus Frequency
| Corpus | Freq (per M) | Best form | Share | Zipf rank | Forms |
|---|---|---|---|---|---|
19th_books |
191.99 | 791 | 100% | 480 | 3 |
20th_books |
89.39 | 1476 | 100% | 943 | 3 |
wiki_math |
181.32 | 974 | 100% | 622 | 3 |
wiki_geography |
61.63 | 2285 | 100% | 2285 | 1 |
wiki_biology |
245.71 | 508 | 100% | 508 | 1 |
wiki_modern_life |
79.44 | 1859 | 100% | 1859 | 1 |
wiki_arts |
44.60 | 3077 | 100% | 3077 | 1 |
wiki_society |
187.28 | 1149 | 100% | 728 | 3 |
wiki_linguistics |
78.46 | 1634 | 100% | 1634 | 1 |
wiki_physical_science |
674.71 | 194 | 100% | 169 | 3 |
wiki_history |
76.29 | 1786 | 100% | 1786 | 1 |
early_modern_science |
582.06 | 324 | 100% | 186 | 4 |
religious_translated |
209.82 | 1079 | 100% | 478 | 3 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
229.50 | 955 | 100% | 518 | 4 |
eu_parliament_debates |
58.33 | 2796 | 100% | 1491 | 2 |
openstax_science |
473.78 | 431 | 100% | 278 | 3 |
openstax_society |
154.19 | 1885 | 100% | 853 | 3 |
wpa_life_histories |
28.68 | 3864 | 100% | 2535 | 2 |
Best form = the single best-ranked form in the corpus, share-blind — how the spelling itself ranked. Share = how much of that spelling belongs to this lemma, when several senses compete for it. Zipf rank = all the forms combined (variant spellings included), each scaled by its share, and what feeds the combined frequency rank. Combining forms improves on the best form, but a share below 100% pushes the other way and usually wins: a sense holding a small slice of a common spelling is a rare word, so its rank lands downrated below the best form — and once it falls past what the corpus can support it is capped at the rank an unlisted word would get.