Base difficulty: Level 1050 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 |
C1 (5 of 6) | 12000 |
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 |
5.89 | 7085 | 67% | 10628 downrated | 1 |
20th_books |
4.07 | 8790 | 67% | 13185 downrated | 1 |
wiki_math |
15.40 | 3324 | 67% | 4986 downrated | 1 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
113.77 | 1383 | 67% | 1218 | 2 |
wiki_modern_life |
133.39 | 1069 | 67% | 1088 downrated | 2 |
wiki_arts |
20.70 | 4237 | 67% | 6356 downrated | 1 |
wiki_society |
64.96 | 2549 | 67% | 2138 | 2 |
wiki_linguistics |
16.84 | 3892 | 67% | 5838 downrated | 1 |
wiki_physical_science |
233.10 | 693 | 67% | 620 | 2 |
wiki_history |
0.00 | — | — | — | 0 |
early_modern_science |
25.06 | 2833 | 67% | 4250 downrated | 1 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
34.81 | 3051 | 67% | 2888 | 2 |
eu_parliament_debates |
115.38 | 1270 | 67% | 1012 | 2 |
openstax_science |
270.97 | 655 | 67% | 521 | 2 |
openstax_society |
49.60 | 3245 | 67% | 2460 | 2 |
wpa_life_histories |
0.00 | — | — | — | 0 |
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.