Base difficulty: Level 205 edit
Level distribution for noun (tool): 19: 2 205: 31 460: 2 1000: 15 1040: 13 1050: 1 1078: 5 1090: 2 1203: 1 1209: 1 1210: 7 1216: 1 1221: 1 1222: 2 1224: 8 1399: 4
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
cefr |
A1 (1 of 6) | 800 |
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 |
477.08 | 131 | 50% | 262 downrated | 1 |
20th_books |
485.15 | 134 | 50% | 268 downrated | 1 |
wiki_math |
14.44 | 2916 | 50% | 5832 downrated | 1 |
wiki_geography |
76.34 | 874 | 50% | 1748 downrated | 1 |
wiki_biology |
26.52 | 2569 | 50% | 5138 downrated | 1 |
wiki_modern_life |
90.28 | 743 | 50% | 1486 downrated | 1 |
wiki_arts |
106.71 | 584 | 50% | 1168 downrated | 1 |
wiki_society |
90.19 | 720 | 50% | 1440 downrated | 1 |
wiki_linguistics |
57.24 | 1144 | 50% | 2288 downrated | 1 |
wiki_physical_science |
21.96 | 3013 | 50% | 6026 downrated | 1 |
wiki_history |
152.61 | 369 | 50% | 738 downrated | 1 |
early_modern_science |
143.14 | 375 | 50% | 750 downrated | 1 |
religious_translated |
314.16 | 196 | 50% | 392 downrated | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
16.60 | 3228 | 50% | 6456 downrated | 1 |
eu_parliament_debates |
23.74 | 2145 | 50% | 4290 downrated | 1 |
openstax_science |
31.38 | 2121 | 50% | 4242 downrated | 1 |
openstax_society |
93.42 | 763 | 50% | 1526 downrated | 1 |
wpa_life_histories |
280.10 | 224 | 50% | 418 downrated | 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.