Base difficulty: Level 275 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 |
|---|---|---|
basic_english |
Basic (1 of 2) | 600 |
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 |
91.18 | 544 | 50% | 1088 downrated | 1 |
20th_books |
90.03 | 578 | 50% | 1156 downrated | 1 |
wiki_math |
13.28 | 3046 | 50% | 6092 downrated | 1 |
wiki_geography |
111.09 | 568 | 50% | 1136 downrated | 1 |
wiki_biology |
271.87 | 189 | 50% | 378 downrated | 1 |
wiki_modern_life |
56.57 | 1298 | 50% | 2596 downrated | 1 |
wiki_arts |
65.91 | 1021 | 50% | 2042 downrated | 1 |
wiki_society |
141.39 | 398 | 50% | 796 downrated | 1 |
wiki_linguistics |
64.49 | 1012 | 50% | 2024 downrated | 1 |
wiki_physical_science |
105.93 | 673 | 50% | 1346 downrated | 1 |
wiki_history |
106.14 | 570 | 50% | 1140 downrated | 1 |
early_modern_science |
126.44 | 430 | 50% | 860 downrated | 1 |
religious_translated |
170.14 | 321 | 50% | 642 downrated | 1 |
cooking |
21.41 | 1955 | 50% | 3910 downrated | 1 |
legal_scotus |
17.71 | 3095 | 50% | 6190 downrated | 1 |
eu_parliament_debates |
64.44 | 932 | 50% | 1864 downrated | 1 |
openstax_science |
140.89 | 468 | 50% | 936 downrated | 1 |
openstax_society |
216.19 | 268 | 50% | 536 downrated | 1 |
wpa_life_histories |
245.59 | 252 | 50% | 504 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.