Base difficulty: Level 280 edit
Level distribution for noun (concept_idea): 19: 2 26: 1 27: 1 221: 28 270: 30 274: 30 275: 28 280: 25 300: 1 360: 1 380: 2 1000: 1 1030: 1 1060: 5 1070: 6 1110: 4 1120: 4 1399: 66
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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 |
7.62 | 6094 | 36% | 8657 downrated | 2 |
20th_books |
9.18 | 5096 | 36% | 7321 downrated | 2 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
11.55 | 3863 | 36% | 9000 capped | 1 |
wiki_modern_life |
25.61 | 3855 | 36% | 5452 downrated | 2 |
wiki_arts |
0.00 | — | — | — | 0 |
wiki_society |
24.50 | 3227 | 36% | 5431 downrated | 2 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
221.62 | 418 | 36% | 605 downrated | 2 |
wiki_history |
0.00 | — | — | — | 0 |
early_modern_science |
0.00 | — | — | — | 0 |
religious_translated |
28.93 | 1850 | 36% | 3246 downrated | 2 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
16.19 | 3220 | 36% | 5892 downrated | 2 |
eu_parliament_debates |
0.00 | — | — | — | 0 |
openstax_science |
207.95 | 415 | 36% | 637 downrated | 2 |
openstax_society |
49.60 | 1475 | 36% | 2703 downrated | 2 |
wpa_life_histories |
8.31 | 4859 | 36% | 8210 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.