Base difficulty: Level 270 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 |
Extended (2 of 2) | 1600 |
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 |
223.90 | 473 | 100% | 441 | 2 |
20th_books |
153.55 | 681 | 100% | 637 | 2 |
wiki_math |
179.01 | 760 | 100% | 760 | 1 |
wiki_geography |
103.04 | 1346 | 100% | 1346 | 1 |
wiki_biology |
121.59 | 1156 | 100% | 1156 | 1 |
wiki_modern_life |
127.96 | 1129 | 100% | 1129 | 1 |
wiki_arts |
317.16 | 337 | 100% | 337 | 1 |
wiki_society |
497.83 | 194 | 100% | 194 | 1 |
wiki_linguistics |
135.43 | 961 | 100% | 961 | 1 |
wiki_physical_science |
344.64 | 378 | 100% | 378 | 1 |
wiki_history |
230.46 | 509 | 100% | 509 | 1 |
early_modern_science |
638.63 | 156 | 100% | 156 | 1 |
religious_translated |
469.98 | 256 | 100% | 241 | 2 |
cooking |
42.82 | 1956 | 100% | 1956 | 1 |
legal_scotus |
276.66 | 447 | 100% | 447 | 1 |
eu_parliament_debates |
176.15 | 673 | 100% | 673 | 1 |
openstax_science |
251.44 | 545 | 100% | 545 | 1 |
openstax_society |
274.89 | 475 | 100% | 475 | 1 |
wpa_life_histories |
65.21 | 1491 | 100% | 1491 | 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.