Base difficulty: Level 360 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 |
15.51 | 4014 | 80% | 5018 downrated | 1 |
20th_books |
21.03 | 3083 | 80% | 3854 downrated | 1 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
0.00 | — | — | — | 0 |
wiki_modern_life |
21.98 | 4830 | 80% | 6037 downrated | 1 |
wiki_arts |
99.38 | 1472 | 80% | 1378 | 2 |
wiki_society |
27.16 | 3992 | 80% | 4990 downrated | 1 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
280.17 | 309 | 80% | 386 downrated | 1 |
early_modern_science |
19.14 | 3976 | 80% | 4970 downrated | 1 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
4.86 | 8979 | 80% | 11224 downrated | 1 |
eu_parliament_debates |
13.85 | 4091 | 80% | 5114 downrated | 1 |
openstax_science |
28.93 | 3302 | 80% | 4128 downrated | 1 |
openstax_society |
108.14 | 1411 | 80% | 1237 | 2 |
wpa_life_histories |
25.28 | 2712 | 80% | 3390 downrated | 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.