Base difficulty: Level 1070 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 |
B2 (4 of 6) | 6900 |
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 |
28.75 | 3707 | 100% | 2553 | 2 |
20th_books |
23.56 | 3405 | 100% | 3405 | 1 |
wiki_math |
154.75 | 1487 | 100% | 744 | 2 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
33.19 | 3761 | 100% | 3761 | 1 |
wiki_modern_life |
63.76 | 4187 | 100% | 2159 | 2 |
wiki_arts |
60.13 | 2311 | 100% | 2311 | 1 |
wiki_society |
27.77 | 4653 | 100% | 4653 | 1 |
wiki_linguistics |
63.42 | 2730 | 100% | 1687 | 2 |
wiki_physical_science |
48.44 | 2782 | 100% | 2782 | 1 |
wiki_history |
0.00 | — | — | — | 0 |
early_modern_science |
32.65 | 3164 | 100% | 3164 | 1 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
312.89 | 448 | 100% | 390 | 2 |
eu_parliament_debates |
101.46 | 1775 | 100% | 1015 | 2 |
openstax_science |
0.00 | — | — | — | 0 |
openstax_society |
0.00 | — | — | — | 0 |
wpa_life_histories |
13.22 | 5379 | 100% | 5379 | 1 |
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.